Malicious PDF — malware analysis report

Static analysis result for SHA-256 a66d84aa3cf24617…

MALICIOUS

PDF

69.4 KB Created: 2020-12-18 00:53:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 268ad318e982053fd8f57bb7226df59d SHA-1: 5c25d0fceefe1eca58c924bbfcca390ac7a12912 SHA-256: a66d84aa3cf246177c8162b07de20b733d70278481eef10c4733803977a60e5d
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains a large number of external links, suggesting a link farm or phishing attempt. The primary URL, 'https://trafffi.ru/aws?utm_term=kpi+dashboard+powerpoint+template+ppt', is likely used to lure victims under the guise of a useful document, leading to a phishing or malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffi.ru/aws?utm_term=kpi+dashboard+powerpoint+template+ppt PDF link annotation
    • https://zerimesatevig.weebly.com/uploads/1/3/4/8/134879836/mopipir-rabezob-zowajevejutip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413838/normal_5fcd749c59dd1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://static1.squarespace.com/static/5fc542159955c744b5580f48/t/5fcd585fd336b863f0d34c48/1607293024188/new_hockey_fighting_rules_2019.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd6e2c6d96458361c2338/t/5fc26b307acac6192a0eebf5/1606576945830/56533485720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3c48b6c3-de70-4714-8d1a-06c01604abd1/56936687213.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/32569083539.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f22ee5c7695ca99bddc9/t/5fc3a7c69d79364840fd8811/1606657990701/nakugakenodonezugekoz.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf498bf81c9a2a0c9828c3/1606371724052/descendants_of_abraham_and_keturah.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc06b148139af037642cc0d/t/5fcc6f6c920f47545b8bbedb/1607233391217/jusotoserimibanuzaxoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5adc82a-9a55-4462-97f5-36580d011ba0/60906052761.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28553bda9c57a97c873ab/t/5fd032c8b8bf0379e602aa82/1607480010009/32781284113.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_off0000c5d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D6 5188 bytes
SHA-256: 7265e5317fb36594cbae099e4aac01260cd27dae7912b1d1a68e8a662ae57383
font_01_sfnt_off0000d755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD755 10304 bytes
SHA-256: 31ebbe665c1e71a7197db9dac4fd6c911ffb33eef3785115e5c53255543779c2
font_02_sfnt_off0000fa83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA83 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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