Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f3ee07cc9f7f19…

MALICIOUS

PDF

66.6 KB Created: 2021-03-10 18:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a437a7c222f9b3bca23708e23c3a69a1 SHA-1: 777e9e3365ffa1f1bfa670715053172c6ace7e3e SHA-256: d7f3ee07cc9f7f19dd134337504c472c08eb73d5d30b4ee241644d43075ce489
124 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of techniques used to redirect users to malicious sites, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8344

Heuristics 4

  • 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
  • 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://botokaw.ru/aws?utm_term=how+to+start+a+nonprofit+organization+in+new+york
    • http://itclick.pro/character_sheet_creator_onlineb4hjx.pdf
    • https://mavezuwunokil.weebly.com/uploads/1/3/4/6/134627141/61bfa.pdf
    • https://bipikive.weebly.com/uploads/1/3/4/3/134342269/supugumebivefovuboma.pdf
    • https://wunaramalus.weebly.com/uploads/1/3/4/5/134576193/mupatokuta.pdf
    • https://cdn.sqhk.co/rorajakura/QjbO6Dz/download_blondie_bride_perfect_wedding.pdf
    • https://cdn-cms.f-static.net/uploads/4446273/normal_60449ae3b2b70.pdf
    • http://indital.fun/87279547204cwe1a.pdf
    • http://krepezh.guru/23597390785l8bht.pdf
    • http://form-lnstagramcopyrightservices.com/x_banner_mockup_psd_freeo5b4u.pdf
    • https://static.s123-cdn-static.com/uploads/4454046/normal_5ff75a9e8bfd0.pdf
    • https://cdn.sqhk.co/nomitusibop/gcifGjh/stack_rings_rose_gold.pdf
    • http://soxiwokix.iblogger.org/96035719748.pdf
    • https://cdn.sqhk.co/sefibenip/dgghfBv/glowroad_app_download_for_iphone.pdf
    • https://cdn.sqhk.co/wosipuvetot/ahb0hjD/gosipemodowepufa.pdf
    • http://zogaduwipirow.iblogger.org/livadelerewazusojaworew.pdf
    • http://gnoogle.site/25867337699qb56g.pdf
    • https://cdn.sqhk.co/zimajigon/sgdEJgd/superstar_life_cheats_2020.pdf
    • http://poverkavoda.website/su_podium_v2.5_crackeadonxnwe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://palezonipegodaf.epizy.com/5291983642.pdf
    • http://valebuwevunav.epizy.com/xodobazumokudoxudibuge.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb3b.bin
5ec73a893f3dec5c0260b7a94f6513eae34c62c84cc2a256c977cc49acea8bc5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB3B 5308 bytes

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