Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b12f062098aaafa…

MALICIOUS

PDF

62.2 KB Created: 2020-12-13 22:08:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 080bab3dbc400b33229e48627bf7dc96 SHA-1: d69c6f20bc84717112d96be2a04e34a0c49b154d SHA-256: 6b12f062098aaafaf66072aad101c494dd397cf2ec23e221798e385298dab70e
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffset.ru/strik?utm_term=taco+bell+hot+sauce+nutritional+value PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424349/normal_5faaae57d81a0.pdfIn PDF document text
    • https://nodifolosorak.weebly.com/uploads/1/3/4/7/134758422/sugoni_biwovod_vokizutawebej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378406/normal_5f91fd89c47e7.pdfIn PDF document text
    • https://rukazoxet.weebly.com/uploads/1/3/4/0/134040508/ddafbde.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/kelageketisefuv/fapisiruwopegufojejupiku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ce2bd7f-7113-4156-8342-d063f5514d0a/koluw.pdfIn PDF document text
    • https://s3.amazonaws.com/ribowexulo/miss_universe_2018_final_answer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a22cf48-19b7-4700-b0eb-e6321ed63de7/3916932269.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df88758b-8547-4394-8281-cb8269cb2400/xamebedexapuralapusekiw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf86f8ca-1649-42c4-af14-20fe2a884d79/nom-_026-_stps-_2008_resumen.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf3587acac6192a85cb19/1606284120654/the_healthy_meal_prep_cookbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea61a833-789c-463a-b3fb-e0f005b3bccb/biology_pogil_dna_structure_and_replication.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB874 5036 bytes
SHA-256: 49a75eac4066e415b4e4a2740a67082d9ab1477dc4c579aaac3ee78abbb5999b
font_01_sfnt_off0000c98f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC98F 10120 bytes
SHA-256: 3a6a32d74cbce7eac41ae7110e5be7999af7e2cfb58ff11a70d2b86956b44b11

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