Malicious PDF — malware analysis report

Static analysis result for SHA-256 6961d2b372ac0907…

MALICIOUS

PDF

83.8 KB Created: 2021-06-02 08:43:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: a47ee5977403eb2797af802b2e90c7ba SHA-1: 32428e411f3b2c558e61c446abf51061fa3e83cf SHA-256: 6961d2b372ac0907a255546faa3ae13a0b2a4f3c0fe3c87a2d3b4cdac6d298e8
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing or malicious link farm attempt. The document body, though partially corrupted, suggests a lure related to disabling Razer keyboard gaming mode, directing users to external URLs. The presence of numerous external links, many hosted on disposable domains, reinforces the malicious intent of redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://garglob.ru/pbw?utm_term=how+to+disable+gaming+mode+on+razer+keyboard PDF link annotation
    • https://wivetagimogik.weebly.com/uploads/1/3/4/6/134618772/83f201de6.pdfIn PDF document text
    • https://putesoborufo.weebly.com/uploads/1/3/0/8/130814126/93536.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385415/normal_604a99baa4655.pdfIn PDF document text
    • https://xunimolozabipos.weebly.com/uploads/1/3/2/6/132681728/nomaxirojivetu-zukegegovatisen-xajoloxavak.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4498392/normal_60b6808c1bbab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489716/normal_60601154ca7d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451760/normal_604999decf097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425009/normal_5fd37d42c14fa.pdfIn PDF document text
    • https://pugerazetowed.weebly.com/uploads/1/3/4/3/134341851/a5e7dcea1e72977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_601365c1280f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464068/normal_60274d82c60d4.pdfIn PDF document text
    • https://wigikeketiru.weebly.com/uploads/1/3/1/4/131406435/zakixiranememalufir.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460946/normal_60072048aad3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489992/normal_602b9488bd688.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387938/normal_6062baa038f33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450631/normal_60249446d9833.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465269/normal_6008c91e6c2fb.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nunaruribeg.pbworks.com/w/file/fetch/144425205/is_goodwill_an_asset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b93dcc5a-51b4-47a8-9980-f6e484c48317/14681640059.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb6563e4-a2c6-433b-97c3-a8cfd61d18dc/precalculus_pathways_to_calculus_a_problem_solving_approach.pdfIn PDF document text
    • http://xibosini.pbworks.com/f/sufenubegerixukibo.pdfIn PDF document text
    • http://wekibivu.pbworks.com/f/lubenito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02b066c5-9cbf-4bc4-bfe8-4f0b8ee285c9/14263880774.pdfIn PDF document text
    • http://xoxafepapesu.pbworks.com/w/file/fetch/144424149/ejemplos_de_evaluacion_diagnostica_individual_en_preescolar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4522254-e15c-4fc8-a2cc-c87d845458da/773049618.pdfIn PDF document text
    • http://pamotekegopa.pbworks.com/f/53730524358.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE43 1764 bytes
SHA-256: bb7dc033a4c91c3c895784ed53bcfc14eb517a70edd96973ab3a7c38171ff2a3
font_01_sfnt_off000106f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F0 5556 bytes
SHA-256: eba0b973e9fcd7881dabf48c4e62bb23c15a712d392423857f852ad1afd12df9
font_02_sfnt_off000119d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119D8 11384 bytes
SHA-256: c78d385099b83d3abfdc7d8e528b5a5ae8657c36238b536248a9ef26643c4aa0

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