Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e2f4c82745b5329…

MALICIOUS

PDF

95.2 KB Created: 2021-04-01 04:15:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 650364c37d65f37e93c124c448336a03 SHA-1: 2b7ba14dd941e1b81bc1f662482689739bcb4aff SHA-256: 9e2f4c82745b53296eac575d335087f74015785a1dbd97e13c4c52f127f0fbea
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The document contains numerous external URLs, many hosted on disposable domains, suggesting a link farm or phishing lure. While no scripts were explicitly extracted, the presence of external links and the nature of the heuristics point towards a phishing or malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/award?keyword=la+administracion+publica+federal+en+mexico+pdf PDF link annotation
    • https://lolimesiwazefa.weebly.com/uploads/1/3/2/7/132712373/e2a4b.pdfIn PDF document text
    • http://worakozun.22web.org/18014686315.pdfIn PDF document text
    • https://wejerimaz.weebly.com/uploads/1/3/4/6/134648800/8943544.pdfIn PDF document text
    • http://idealicaitalia-oficial.site/beat_ride_app_promo_codev7u37.pdfIn PDF document text
    • https://widalafamibag.weebly.com/uploads/1/3/0/8/130814492/91d3c0853e8.pdfIn PDF document text
    • https://ruragivelexodi.weebly.com/uploads/1/3/4/6/134663557/a685df.pdfIn PDF document text
    • https://dofonumid.weebly.com/uploads/1/3/5/3/135314870/jibofifukepabufijow.pdfIn PDF document text
    • https://jofufibiwew.weebly.com/uploads/1/3/5/3/135347649/fugogukuruzul_nobamumepula.pdfIn PDF document text
    • http://bioforcecolumbia.site/nidakeberezetevectuv0.pdfIn PDF document text
    • https://cdn.sqhk.co/pesamelez/s56ha2h/94434913250.pdfIn PDF document text
    • https://cdn.sqhk.co/voxedijudibo/c7jdIhi/rezavuwizazogugujijux.pdfIn PDF document text
    • https://cdn.sqhk.co/ravuviwidi/dkMV6hb/how_do_you_apply_for_job_at_walmart.pdfIn PDF document text
    • https://jaweditulopo.weebly.com/uploads/1/3/4/3/134313576/7feadd092d0c.pdfIn PDF document text
    • https://dabomisefeb.weebly.com/uploads/1/3/0/7/130775205/rezexezu_mapewomopofoja.pdfIn PDF document text
    • http://stroiline74.ru/programacion_neurolinguistica_tecnicasudpy4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rirafobom.rf.gd/71765889498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68027d33-0e98-49f4-aa67-9538490f106b/fosuvu.pdfIn PDF document text
    • http://vitupofelomar.epizy.com/79762800092.pdfIn PDF document text
    • http://venijulezazowo.rf.gd/lixudadegovopebinon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/450111c4-7dd5-46c2-91c3-9505bb931265/vipil.pdfIn PDF document text
    • http://gisinazujawapub.epizy.com/batovojevo.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_off0001324e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1324E 5448 bytes
SHA-256: 0a7f51f78acd876efd84a2468e515ef25d2c6a9d0cac4033d7b673b68ead9038
font_01_sfnt_off000144c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144C7 12576 bytes
SHA-256: dde7be97bdd79a4075e142d18da23676282eb1cd28f5efe816d3c938ffce6d34

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