Malicious PDF — malware analysis report

Static analysis result for SHA-256 adf6c4e7389dd1fa…

MALICIOUS

PDF

68.0 KB Created: 2021-03-01 21:29:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 0fabc4394e71ba21e289c55821c09e4d SHA-1: d7a8350522708899e54e789e983b99f443afeab0 SHA-256: adf6c4e7389dd1fab47ea109ac8e09598a5e6fd0bb9d03ed981fb4ba4987b5c4
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains embedded URLs, including one pointing to 'fokemale.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to reference 'Dunkin donuts blueberry donut nutrition information' as a lure to entice users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://fokemale.ru/strik?utm_term=dunkin+donuts+blueberry+donut+nutrition+information PDF link annotation
    • https://cdn.sqhk.co/fumodolanes/ijjjhge/download_game_crowd_clash_of_lights.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5fd2f5d647ca0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410953/normal_6034603f013d1.pdfIn PDF document text
    • https://cdn.sqhk.co/nexetifosam/I1Ib2id/35791714389.pdfIn PDF document text
    • http://uorott.com/febutipikirikobana6xx0j.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404733/normal_5ff8043a25dd5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381976/normal_5fecf9542f3d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499300/normal_60010eee0744f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421366/normal_6034a0fa9b288.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420911/normal_6030e813050df.pdfIn PDF document text
    • http://golosa-spasibo.ru/pizolezujzytu5.pdfIn PDF document text
    • http://1xbet-football.fun/flippy_bottle_extremexd1ce.pdfIn PDF document text
    • https://cdn.sqhk.co/bekutojeke/j2uTSdk/brilliant_distinctions_kybella_coupon.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504922/normal_5fef6ea62f3db.pdfIn PDF document text
    • http://rentline.pro/98022939340mobtj.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/salade/luvofobinaberopup.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/managing_risk_in_alternative_investment_strategies.pdfIn PDF document text
    • https://s3.amazonaws.com/juvosi/enable_implicit_beamforming_orbi.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/56803329100.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_off0000cd62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD62 5360 bytes
SHA-256: 4df83ee095fd6c3516e225126a45bbcbd77cffc7feebfe3fdd082af6ae45a534
font_01_sfnt_off0000df8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF8F 10256 bytes
SHA-256: 4ed3d8fe5bf0d45c40728971aee5112cbe662b26da6054868ac3708e7e62cca6

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