Malicious PDF — malware analysis report

Static analysis result for SHA-256 54ab85bdd1969e02…

MALICIOUS

PDF

37.6 KB Created: 2021-04-01 05:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0ce451a8b6803eba85081c4fd1024c57 SHA-1: c4a0e8ea2cd196bc9d4fe18b04aa68c01d3a5bfb SHA-256: 54ab85bdd1969e02f51660f67808fa959b449bee3f2864b343101d8bd920859e
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6430

Heuristics 5

  • 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-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 37 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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
  • 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://jottigo.ru/aws?utm_term=how+much+does+the+average+criminal+lawyer+cost PDF link annotation
    • https://cdn.sqhk.co/dinigivo/7R0ibgi/outliers_book_chapters.pdfIn PDF document text
    • http://repochka.site/sifesuii66x.pdfIn PDF document text
    • http://nickned.me/krups_il_primo_972a_manualtdvo4.pdfIn PDF document text
    • http://sapazukuwujoji.22web.org/samsung_j7_6_2016_firmware.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/jOjhjaN/ragusekon.pdfIn PDF document text
    • https://cdn.sqhk.co/zejejofe/hyJE2sv/detention_movie_full_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/nojebimit/jiijdAQ/disordered_thinking_synonym.pdfIn PDF document text
    • http://vizionsmc.net/dj_air_horn_appx2z2w.pdfIn PDF document text
    • http://nixedorufimidax.rf.gd/73935356787.pdfIn PDF document text
    • http://tanoxoxafobin.epizy.com/jubanagawukekas.pdfIn PDF document text
    • http://dapukagizepor.rf.gd/72039050491.pdfIn PDF document text

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