Malicious PDF — malware analysis report

Static analysis result for SHA-256 324f141f6c87216d…

MALICIOUS

PDF

65.6 KB Created: 2020-11-19 05:05:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fa22c20b626b9f7372e0a3f0720db227 SHA-1: 16d5c87db1678335a370a47528c1aae00e9d32fc SHA-256: 324f141f6c87216db8bab02c53a6eeda652e7ab57da4705fed547fcbbf4d2cc6
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a suspicious domain ('trafffi.ru') that is likely used for phishing or malware distribution. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search results or distribute malicious content. ClamAV also detected this file as 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffi.ru/123?utm_term=simplicity+crib+8676c+instruction+manual PDF link annotation
    • https://polatubogo.weebly.com/uploads/1/3/4/5/134598163/falajitoxov_jilolosoje_dokobogikiwedek.pdfIn PDF document text
    • https://lisoletabe.weebly.com/uploads/1/3/4/5/134511207/4152529.pdfIn PDF document text
    • https://kinigapiluxuke.weebly.com/uploads/1/3/4/8/134863840/bb3e2237655e147.pdfIn PDF document text
    • https://novebeze.weebly.com/uploads/1/3/3/9/133997241/0ba6e55a6.pdfIn PDF document text
    • https://wudivaju.weebly.com/uploads/1/3/4/7/134762352/xeposawij-kalijanunemimaz.pdfIn PDF document text
    • https://xogunepole.weebly.com/uploads/1/3/4/5/134529021/352059f93aac688.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/wavelet_analysis_matlab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b33c3aab-98c8-4eb1-9a42-7776c5764b73/58764562882.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/433811949.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0429457d-6f41-40ee-b03a-917b28302396/wuvegodemelowezubo.pdfIn PDF document text
    • https://s3.amazonaws.com/dusined/51463293520.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/rogers_family_coffee_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/steampunk_tower_unblocked_games.pdfIn PDF document text
    • 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000aefb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFB 2972 bytes
SHA-256: 15eadf446dc272ce57e8fd3338e9cf193f324a4da69f120b9cd2cd04110db9fa
font_01_sfnt_off0000b9a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9A4 5852 bytes
SHA-256: 7d4de5891b92977a7d839e8d2fc1c3774c560db5a33cf6758ea967c26dc80c4b
font_02_sfnt_off0000cd80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD80 12936 bytes
SHA-256: 7d77d803ff8351a7330356d0ab62bb8d0aea64b5eda834bc669ae2d406bfce68

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