Malicious PDF — malware analysis report

Static analysis result for SHA-256 552f09888b5f2b5f…

MALICIOUS

PDF

486.6 KB Created: 2021-12-15 14:54:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: b1478b8be5250cfd93784bd665f1e203 SHA-1: 4cc46d326ea479d9ba3531330077835be6743d86 SHA-256: 552f09888b5f2b5f6012329d0094612083387cb1d5f8e174069eb59dcde43b24
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5089

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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 http://watdoenwevandaag.nl/upload/88137093306.pdf In PDF document text
    • https://www.hasmow.com.au/application/third_party/ckfinder/userfiles/files/tewulumezivulutotedaxos.pdfIn PDF document text
    • https://viettrungson.com/media/Files/depazomikiwikozu.pdfIn PDF document text
    • http://floridadressyourhome.com/uploaded_files/userfiles/files/wozefuwabademomopuzevesa.pdfIn PDF document text
    • http://mot-a-mot.fr/kcfinder/upload/files/vunuvokefivatugez.pdfIn PDF document text
    • http://friulanapanini.com/images/file/58363217238.pdfIn PDF document text
    • http://paoladebenedetti.eu/userfiles/files/72629448613.pdfIn PDF document text
    • http://humanconsulting.cz/media/file/mesofufume.pdfIn PDF document text
    • https://tapuionoticias.com/ckfinder/files/91998017540.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/161acf262cd242---38177498630.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/7dde28ad227e232897cc8dc3bbea62f6/dokux.pdfIn PDF document text
    • http://xn----7sbbgprpk7biiq.xn--p1ai/admin/ckfinder/userfiles/files/fowupubufekupodebani.pdfIn PDF document text
    • https://www.eecpowerindia.com/codelibrary/ckeditor/ckfinder/userfiles/files/42175047557.pdfIn PDF document text
    • http://goodslib.com/userfiles/file/dibiwuxo.pdfIn PDF document text
    • http://v-lukomorie.com/uploader/files/59391930072.pdfIn PDF document text
    • http://csc0311.com/userfiles/file/20211016231251_s0y8xa.pdfIn PDF document text
    • https://hongdung.vn/ckeditor/images/files/waruxutofok.pdfIn PDF document text
    • https://narellesastro.com/userfiles/files/38924999854.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/6ca798357113882eda031149ba78cd64/6689302057.pdfIn PDF document text
    • https://cogi.sed-hut.pl///files//editor/file/37075652252.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/0e9a33d4184554f5cf1843c083805c59/91835850051.pdfIn PDF document text
    • http://spartapr.com/images/upload/file/lidoboxuripuzoposozemoje.pdfIn PDF document text
    • http://anpo.vn/upload/files/wixedozitalifajonuximin.pdfIn PDF document text
    • http://makesrealsense.com/ckfinder/userfiles/files/xotuwipoboxubekidivet.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/47026388263.pdfIn PDF document text
    • https://managed.jlcomputers.com/home/davesmooIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/Z3ufxtS7Wvw/uplcv?utm_term=is+annabel+lee+a+love+poemPDF 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
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00072f8e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00072f8e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00072f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F8E 10280 bytes
SHA-256: eabddd7de1443407873b5bf8c6bce1a03607ff31f53dd3d4ffc4ce1c74ff9380
font_01_sfnt_off0007467c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7467C 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00075d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D1B 17652 bytes
SHA-256: 1eaabf329a041e5a546acf94c598e6481b60b0f434e4ff2825689c09013878a3