Malicious PDF — malware analysis report

Static analysis result for SHA-256 014e63afe56d2240…

MALICIOUS

PDF

71.6 KB Created: 2021-02-18 21:28:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: a01207bae70ae3700eee6141ee851bd1 SHA-1: 942ee2b1a4a24b6eb46022293ca2af8708f490d6 SHA-256: 014e63afe56d2240c8b79df5c92b53f0ea5aa84dbb2c3ab8bff1182240a21f7f
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically pointing to a phishing domain disguised as a YouTube link. The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF's structure and embedded links suggest it's part of a phishing campaign, likely using a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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://jottigo.ru/strik?utm_term=how+to+use+a+double+bubble+thinking+map+youtube PDF link annotation
    • http://mstmail.space/selawubazazexijozivamejus5dm.pdfIn PDF document text
    • http://workmonster.net/wijukufdcxkd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413862/normal_5fd8e1221bb2c.pdfIn PDF document text
    • http://parrrtner.xyz/mikorisokerawinakuwume3lmo5.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/zumomasugipeno/59212463066.pdfIn PDF document text
    • http://dujibagakag.epizy.com/38997820605.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/bomberman_2_apk_para_android.pdfIn PDF document text
    • http://begupegag.epizy.com/centreport_wellington_container_tracking.pdfIn PDF document text
    • http://jolavewavesuj.epizy.com/delugodirad.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/bloodborne_trophy_guide_psn.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_off0000d53c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD53C 5636 bytes
SHA-256: 021edde6171f8055fb74280fead6bcb8acecef55a9413e3724ec8453d27e3e81
font_01_sfnt_off0000e855.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE855 13604 bytes
SHA-256: cd3c8a342e606ee482288baa60c24788b190c1f92f62b6ab6d4e25bda215857f

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