Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be016c8d2970a6b…

MALICIOUS

PDF

73.9 KB Created: 2020-12-30 12:36:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 0ac64ba635c923cd6d80309d68ff634d SHA-1: 5c04b85faddb00adaea9c565a1804b8179c56a0d SHA-256: 2be016c8d2970a6bd72176a6c10ca7bbd26249de4a05a3f099e0eaf2bbf46a9a
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. While no scripts were explicitly extracted, the presence of external links and the nature of the heuristics suggest a potential for JavaScript execution or redirection to malicious sites, aligning with T1059.007.

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://trafftec.ru/strik?utm_term=advertising+and+marketing+communications+salary PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500878/normal_5fc1e84068ed1.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/RgiskXe/modern_sleeper_sofa_with_chaise.pdfIn PDF document text
    • https://falojabuvo.weebly.com/uploads/1/3/4/7/134774067/929450.pdfIn PDF document text
    • https://rogenogenitel.weebly.com/uploads/1/3/4/3/134316557/0c86a.pdfIn PDF document text
    • https://cdn.sqhk.co/fabukujeb/jhhihcp/cricket_live_match_app_ipl.pdfIn PDF document text
    • https://zunitilamurako.weebly.com/uploads/1/3/4/5/134529552/5458182.pdfIn PDF document text
    • https://fojaxusulilunud.weebly.com/uploads/1/3/1/3/131381134/xedawifekomaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b57fe7d1-ef6d-4694-8cc2-4dae52d18cd1/kiwegar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1268089a-8fc8-4ed6-b75c-419b797cc5b9/rockwell_bladerunner_x2_blades.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd170f3f-0064-46f4-b4a2-cdb1c8f162c8/best_poultry_shears_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f0884a6-48f4-4857-9df5-ca83f7c72493/49078326763.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_off0000e094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE094 5472 bytes
SHA-256: 8e97da89b92cc15edf1130c33e06bfe9c78e1432a898dcf50f3926f21d447e06
font_01_sfnt_off0000f32f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF32F 10908 bytes
SHA-256: 5c5b82bdf54545c3e0f17d300052594856954d399513573527575f30a787843c

Open this report in the interactive analyzer, or submit your own file for analysis.