Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e1be6c841edfdc1…

MALICIOUS

PDF

66.7 KB Created: 2020-11-25 04:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: eda4f67080b67451748854c74ce0911d SHA-1: d9718f38ade79d5af4db099d5bc659e95271fc3a SHA-256: 6e1be6c841edfdc12a186907d8ff91c18ef65bc035e465e81e067f360ad72481
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/123?utm_term=gta+san+andreas+apk+indir+cepde PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393204/normal_5fbda23c26178.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369525/normal_5f891ac46a685.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387919/normal_5f9a8417b0fe9.pdfIn PDF document text
    • https://vizipelijokefar.weebly.com/uploads/1/3/4/5/134512389/lidamil-salijopoxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500183/normal_5fb618f8e6fa0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374838/normal_5f8daa14e392b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367313/normal_5f8e15e69b878.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381287/normal_5f8ba8a85f399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383807/normal_5f9722e31e7bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421940/normal_5f9e9e873a18b.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/xuzed/bosatotixumif.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/prayer_of_praise_to_god.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/sejikiresezatugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24af1832-6aa8-4098-93e8-700a1ab58ea4/91263339927.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/013aef99-442e-4ced-a472-1181a8900377/splatoon_ability_guide.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_off0000c608.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC608 5128 bytes
SHA-256: 258fa89fd10e39b7d4922b452ab11332135e9800961d6f1a84b16737089971e5
font_01_sfnt_off0000d793.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD793 11140 bytes
SHA-256: 641b4a48b2f74a66993f259e684d61de8c5f1e707343b74ddf05f8785d726fca

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