Malicious PDF — malware analysis report

Static analysis result for SHA-256 67dface9f878e46a…

MALICIOUS

PDF

76.8 KB Created: 2020-12-31 20:06:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 8ae25f3d347ba4129b247802870ddbfe SHA-1: 264fad00d76d1e6bac7dea5c41f5578e0cf0c0f4 SHA-256: 67dface9f878e46acff8f43cc24f3ba635645107024084ae021567de08b06dc0
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains a significant number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The presence of URLs like 'https://trafffe.ru/123?utm_term=panama+extradition+laws+prison+break' indicates a potential lure to phishing or malware distribution sites. No scripts were extracted, but the PDF structure and numerous external links point towards a malicious document designed to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafffe.ru/123?utm_term=panama+extradition+laws+prison+break PDF link annotation
    • https://wosexepipoto.weebly.com/uploads/1/3/5/3/135347387/sonibulawugujexa.pdfIn PDF document text
    • https://cdn.sqhk.co/gupetipek/3lhaihT/disney_themed_island_animal_crossing_dream_address.pdfIn PDF document text
    • https://sajenaviwabawi.weebly.com/uploads/1/3/4/2/134266368/xefutufetoruxit-nakan-pusatuga-pavexaves.pdfIn PDF document text
    • https://cdn.sqhk.co/zofagopipowi/bRibKJK/can_you_escape_adventure_level_9_walkthrough.pdfIn PDF document text
    • https://mewukonil.weebly.com/uploads/1/3/4/0/134096476/35bb4.pdfIn PDF document text
    • https://ruparowix.weebly.com/uploads/1/3/4/3/134350000/xalufoz.pdfIn PDF document text
    • https://rofofomigedug.weebly.com/uploads/1/3/4/4/134486696/kunap_jiribovezudi_vedaliwokiza_samejomibu.pdfIn PDF document text
    • https://fetepidema.weebly.com/uploads/1/3/4/6/134684810/vogikim-vonetutolot-geduras.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/zohgijL/bayside_milk_farm_phone_number.pdfIn PDF document text
    • https://jagotizepevex.weebly.com/uploads/1/3/4/4/134464701/pigari.pdfIn PDF document text
    • https://vomediwanuxorat.weebly.com/uploads/1/3/4/3/134327005/wuwob.pdfIn PDF document text
    • https://xutezanepone.weebly.com/uploads/1/3/3/9/133999331/kisalodununabad_wujapoworiwuwa_dusumino_zesalag.pdfIn PDF document text
    • https://luwamagol.weebly.com/uploads/1/3/4/3/134375262/8692496.pdfIn PDF document text
    • https://cdn.sqhk.co/sofopiro/2olRgdI/49374792941.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ef20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF20 5468 bytes
SHA-256: 0f20d58cd0a1a387d2e7fc0b52887ee63f32be850b99086cfbb221aae726041a
font_01_sfnt_off000101b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B4 10816 bytes
SHA-256: a679810ffdfcb110fa7f828e1777a3619474b5a9f7af88eec5065009d9cb707d

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