Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8b3ffdabe9f50e…

MALICIOUS

PDF

88.3 KB Created: 2021-10-10 14:02:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: f3b19a35aed1404c5c43f46e0f6cc2e1 SHA-1: ffea700064df1dd0b0fa4b527ffc3c3a1316789d SHA-256: 5d8b3ffdabe9f50ec6fde418fcdc5232c00d4cb72433d50990188ea9c3ea52c0
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://gozdekadife.com/resimler/files/mapilufo.pdf In PDF document text
    • http://studioiulianella.it/userfiles/files/33603340654.pdfIn PDF document text
    • http://guojingmall.com/userfiles/file///zivobin.pdfIn PDF document text
    • http://mengnuanua.com/app/webroot/files/files/32636812629.pdfIn PDF document text
    • http://ayrh.internet-match.com/upload/files/pobafegigasodunava.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/a08fcacd885baf4f8397182c0e4a18da/pigezemi.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16152bcf099c82---rigakitojegotobifog.pdfIn PDF document text
    • https://oilbasaro.com/web/images/ckfinder/files/20210913163541.pdfIn PDF document text
    • http://f-kcc.jp/user_data/userfiles/files/xowokirunitav.pdfIn PDF document text
    • http://paoladebenedetti.eu/userfiles/files/kuzamud.pdfIn PDF document text
    • https://petek.biz/resimler/files/99754289316.pdfIn PDF document text
    • https://skinrepublic.vn/webroot/img/files/milejisapeleren.pdfIn PDF document text
    • http://bbmpva.nl/fckassets/file/juzasugirow.pdfIn PDF document text
    • https://perfectsextherapy.com/public_html/userfiles/file/petuvatetejuvapupoze.pdfIn PDF document text
    • http://alphasigmaoverseas.com/userfiles/file/lakalisexigis.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/buk6ufeslmhdf7avodu4brcpp3/21892098886.pdfIn PDF document text
    • http://anhuicrew.com/upload_fck/file/2021-9-11/20210911104720858475.pdfIn PDF document text
    • http://bargiel.com.pl/ckfinder/userfiles/files/35526496095.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/9298bdfb03121f72ac6ec0208cd14d7e/fexezepujodetosekepomaber.pdfIn PDF document text
    • https://xrtradingfeedback.com/cmsimages/file/37635206021.pdfIn PDF document text
    • http://maurovalleferroarchitetto.eu/userfiles/files/zafeserobifudupeminenixe.pdfIn PDF document text
    • https://gmt-tw.com/app/webroot/userfiles/files/98528973452.pdfIn PDF document text
    • http://mijinmotor.com/fckeditor/userfiles/file/1678040504.pdfIn PDF document text
    • http://sangiorgioautoservizi.com/userfiles/files/42804827175.pdfIn PDF document text
    • http://samnakthodrahassob.com/userfiles/file/18819284684.pdfIn PDF document text
    • http://praguynakorn.com/praguynakorn/picture/datapro/files/ragenuxipigavenunurupaj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=machiavelli+lion+and+fox+quotePDF 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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0A8 10712 bytes
SHA-256: 95d8febe8e4db7d19f4eb7746afcd6cd1e2e0126c5143a52c1e938b1db9f8eef
font_01_sfnt_off00010905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10905 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12117 19204 bytes
SHA-256: 5f1d1133ff5b049e2f92836632934da2c0941e520e3cad7c307c9e6d6b2b2de7