Malicious PDF — malware analysis report

Static analysis result for SHA-256 55209bc4e109a228…

MALICIOUS

PDF

137.1 KB Created: 2022-02-10 23:53:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: db8aeb2164e9b9f6014ae0589a30bd3f SHA-1: 6274587585d00b0f04acb7d2e72a53f57b7ae048 SHA-256: 55209bc4e109a22812224aab14c185f60fc8be4e73c34e626c27f2360c82402e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to compromised CMS uploads and disposable hosting, indicating a link farm designed to lure victims. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or a scam. While no scripts were directly extracted, the PDF structure and URL patterns are consistent with malicious document delivery mechanisms.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9428

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://apra.pl/files/file/88319545224.pdf In PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/9ee93ed6188674b597a2d34601541917/wubufinabitax.pdfIn PDF document text
    • http://belv.ru/userfiles/file/lovekesujagu.pdfIn PDF document text
    • https://weilaimachinery.com/userfiles/files/948213470.pdfIn PDF document text
    • https://artistprasanna.com/userfiles/file/kogolisedunijotelaj.pdfIn PDF document text
    • https://chambres-hotes-aube-bleue.fr/userfiles/file/kodenobomugegag.pdfIn PDF document text
    • https://genegurumiraclehealer.com/userfiles/file/waximagonidarapawa.pdfIn PDF document text
    • http://lingeriedediva.com/UploadFile/file/2021111221435573499.pdfIn PDF document text
    • https://a5productions.com/home/a5pro/public_html/ckfinder/userfiles/files/73927576133.pdfIn PDF document text
    • https://fiscalonline.eu/app/webroot/files/userfiles/files/dujonorinomigonil.pdfIn PDF document text
    • https://nrsa.tj/nrsa_system/ckeditor/kcfinder/upload/files/kavaka.pdfIn PDF document text
    • http://chia4kids.ru/ckfinder/userfiles/files/tiwixawotinu.pdfIn PDF document text
    • https://jv-cms.crazy-jessie.nl/uploads/files/telosuxuzatozilenazebixi.pdfIn PDF document text
    • https://chasselas-de-moissac.com/assets/kcfinder/upload/files/16509981216.pdfIn PDF document text
    • http://dallapietamarchisio.it/userfiles/files/2530525710.pdfIn PDF document text
    • http://leeclinic.kr/userData/board/file/68223729513.pdfIn PDF document text
    • http://petukmahaaaraj.com/userfiles/file/55293347588.pdfIn PDF document text
    • https://daotao.cungthieunhidanang.vn/app/webroot/upload/files/22353390785.pdfIn PDF document text
    • http://hunicorn.hu/userfiles/file/rikaworexa.pdfIn PDF document text
    • http://ci-tesco.com/kcfinder/upload/files/gipovitov.pdfIn PDF document text
    • http://erainbowrealty.com/userfiles/file/15910680720.pdfIn PDF document text
    • http://soles2walk.cz/data/file/rakaru.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611f7428762e2---bedetu.pdfIn PDF document text
    • http://goldnumber.info/userfiles/file/sexibosebatewawilel.pdfIn PDF document text
    • https://www.peltonfell.org.uk/ckfinder/userfiles/files/27505420577.pdfIn PDF document text
    • http://duhira.com/uploads/kcfinder/files/27620302031.pdfIn PDF document text
    • http://wolfpackbasketballacademy.com/content_docs/zaxed.pdfIn PDF document text
    • https://bestrecycledautoparts.net/images_i/file/47756997417.pdfIn PDF document text
    • https://foodsafebox.com/ckfinder/userfiles/files/55556659254.pdfIn PDF document text
    • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/24ae4c177f2aff1392bc8984934fa164/61206399180.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1618777ecb9da7---11850079652.pdfIn PDF document text
    • http://vtdsbinhthuan.vn/public/uploads/userfiles/file/lakow.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/vowogefan.pdfIn PDF document text
    • http://honmamon-s.com/img_seminar/userfiles/file/94489979674.pdfIn PDF document text
    • http://youngthisyear.com/ckfinder/userfiles/files/49448527489.pdfIn PDF document text
    • http://sotel-perm.ru/site/file/15180561255.pdfIn PDF document text
    • http://daiduongmetal.com/uploads/ckfinder/files/vejejusebebibupujis.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/161d3245e0cffb---41604229569.pdfIn PDF document text
    • http://globalfeedindustry.com/upload/files/6282615102.pdfIn PDF document text
    • https://daotaolaixesontay.com/uploads/file/79407273782.pdfIn PDF document text
    • http://happypalettebnb.com/CKEdit/upload/files/vuritovame.pdfIn PDF document text
    • http://werder-ritter.de/UserFiles/File/siwilukowavusagokogu.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/f7962573905f946a9b44ca037ccf16af/wenapifepekosagavasigul.pdfIn PDF document text
    • https://feldmann-spedition.de/pics/userfiles/file/16760562218.pdfIn PDF document text
    • http://studiotrusso.it/userfiles/files/sabisiropijupav.pdfIn PDF document text
    • http://sofia-es.tokyo/yamituki-n/uploads/files/44522256351.pdfIn PDF document text
    • https://lovig.co.za/XSRYdR1H?utm_term=synopsys+design+compiler+student+guidePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    +5 more URL(s)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b46b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B46B 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0001cb8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CB8B 10984 bytes
SHA-256: d7dfeacf9202a0e58aef0e5fcfde223a2ee82abbc071a94568c96c30a6a862e9
font_02_sfnt_off0001e4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E4D7 18068 bytes
SHA-256: 006843a36399d5d9aa890876e63122c8a4ae9964093493edee231cdc01237055