Malicious PDF — malware analysis report

Static analysis result for SHA-256 009407cebdeaad7c…

MALICIOUS

PDF

66.2 KB Created: 2020-11-13 04:42:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: d5a037e2059363ae56549e8932ddd85d SHA-1: bdeea1a58377edde8c0e3ec43a6f92ef24086607 SHA-256: 009407cebdeaad7ca9d982d266a449e7693a6b9227384369a86fc903a2c6b0c9
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical PDF link farm detection and a machine learning classifier, indicating malicious intent. The presence of numerous external links, including to `trafffe.ru`, suggests an attempt to redirect users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and link farm behavior are consistent with phishing or SEO poisoning tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/aws?utm_term=apache+jmeter++ubuntu PDF link annotation
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/widef-xilajuzet-wisogafit.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/2a7dc61a1847d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369794/normal_5fac5f028abb8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417406/normal_5fabc5349ad62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421781/normal_5fab881aa5533.pdfIn PDF document text
    • https://fiwimojulo.weebly.com/uploads/1/3/4/5/134525916/jajexe_gifajofonej_tivoxotovusowi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379387/normal_5f8ca861a8c16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391317/normal_5f9a0cd79dc64.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/sakaburepagase/sufaboxekuru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6d6b205-08fc-49f8-ab6e-26ebf92d0b62/33125937368.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/the_bends_scuba_diving_diagram.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5F7 5168 bytes
SHA-256: 4316e22370b7f2722460616b4958044b14896b0a4d3d0f42a5ad2e3028aec288
font_01_sfnt_off0000d75f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD75F 11016 bytes
SHA-256: e2f879764b537e3c456852a13d881c94a956dbf4eca27fd69084cc994df1f0bb

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