Malicious PDF — malware analysis report

Static analysis result for SHA-256 08e010296bf5570f…

MALICIOUS

PDF

75.4 KB Created: 2020-11-18 23:49:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 911bcbc0df693f46ca54bf5586e7a55e SHA-1: 37e380ef06d08622486265a546cf5f675f97b7a1 SHA-256: 08e010296bf5570f4e54fdd194a74d9e377c3f32a64e88898690411ee41632f8
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of external links, identified as a link farm, which is a common tactic for distributing malicious content or phishing sites. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs, such as 'https://traffset.ru/123?utm_term=pure+mage+guide+morrowind' and 'https://dasujodiket.weebly.com/uploads/1/3/4/4/134481559/fiviren_wizisokov.pdf', are likely part of this malicious infrastructure.

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://traffset.ru/123?utm_term=pure+mage+guide+morrowind PDF link annotation
    • https://dasujodiket.weebly.com/uploads/1/3/4/4/134481559/fiviren_wizisokov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369648/normal_5f8a7bc22c647.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374519/normal_5f98406fd14aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385228/normal_5f8cb602c10ff.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/1e0bf38.pdfIn PDF document text
    • https://jesasifewom.weebly.com/uploads/1/3/1/4/131453969/tinuboxaxamidosoku.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/tokatefozude/great_scotts_menu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5532fe0-c7a1-41e2-8860-64071c94299d/rirubikud.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/hd_movies_free_kabir_singh.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/weed_farm_cheats_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/collector_for_arcgis_android_system_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/gonuxiwela/81798906186.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/amazon_prime_hack_apk.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_off0000e989.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE989 5028 bytes
SHA-256: 870a5c52601e72923c8ea9072c9a46e3ba2f824cd7982840e70a4f7bc2e29ca3
font_01_sfnt_off0000fa9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA9B 11368 bytes
SHA-256: 98eabf76d9595e1478d31c93835c401b43abdb2b3ec8ed9b4df2ae0f92970ccb

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