Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb480b3c4237a0d…

MALICIOUS

PDF

73.6 KB Created: 2020-11-11 04:54:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 22b56756224c480f2dd47daf19da752c SHA-1: 0692af7155faf06cf5e05b7c17911b06bef8f068 SHA-256: 5eb480b3c4237a0da40d6c072e9b046c838ba6aaaede75da67aaf3dfc2e6235e
254 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'traffmen.ru' with a keyword suggesting phishing for Roblox credentials. It also exhibits characteristics of an SEO link farm, with numerous external PDF links. The presence of a password-protected archive lure suggests an attempt to bypass security controls by encrypting a payload. While no scripts were explicitly extracted, the PDF structure and malicious links indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://traffmen.ru/123?keyword=roblox+usernames+and+passwords+2020+pastebin In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372105/normal_5f9cd2bcb1711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387929/normal_5f92f9617c5d8.pdfIn PDF document text
    • https://didowivukosu.weebly.com/uploads/1/3/4/4/134470318/de803f6b18617f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408598/normal_5f92524b43acd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464542/normal_5fab276d93ae9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383334/normal_5f8d36fa7cc29.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/ronenitevodo/sex_offenders_near_me_app.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/zenorabasatatukefoz.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/20487123312.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/perfil_de_suelo.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/word_with_all_vowels_in_order.pdfIn PDF document text
    • https://s3.amazonaws.com/kafifawono/liponevemibumiwajax.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/31176555939.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/descargar_libro_caballo_de_troya_10_gratis.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_off0000d2f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F5 5688 bytes
SHA-256: 00fe693a8d4d959d5c2cd5c49cda7559d9d3fe99fb091e7c6c8b99ddf1ac80d2
font_01_sfnt_off0000e646.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE646 3120 bytes
SHA-256: fde507d3e12ec33e68adf7e75fc7402ffd28b0db1492fb6dd1e3c49ab7b9519b
font_02_sfnt_off0000f2cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CB 11184 bytes
SHA-256: f24a99d47cf95391ad81b1b288d9cd1882188a88ac32de6684d67912b3b6f656

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