Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e29707f56efcc4b…

MALICIOUS

PDF

79.7 KB Created: 2021-02-28 04:58:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 72961f21c9a292aa2bde68852755df4a SHA-1: 5e20f7af59143ce83d525a545f16efbf8d51a00a SHA-256: 2e29707f56efcc4b5440578673bb630efe0b8705c315cebf5dd7d0549d49e330
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a common tactic of luring users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://midufefew.ru/strik?utm_term=real+book+volume+3+bb PDF link annotation
    • http://getplafond.xyz/emotional_intelligence_2.0_audiobook_mp3h11ug.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/36615815304.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379500/normal_601ee615d27bb.pdfIn PDF document text
    • http://tafakiduwav.scienceontheweb.net/wenolavavaxujotapine.pdfIn PDF document text
    • http://waystep.site/adobe_photoshop_elements_2018_windowsjvuwh.pdfIn PDF document text
    • https://cdn.sqhk.co/zukasedu/9o3jcU3/72473436307.pdfIn PDF document text
    • http://meriline.store/34456118808ow3sq.pdfIn PDF document text
    • http://lazujifoxupa.getenjoyment.net/94423946866.pdfIn PDF document text
    • https://cdn.sqhk.co/lizupasepafu/RIaoPLc/custom_notification_sound_android_app.pdfIn PDF document text
    • http://jaxagogilexet.sportsontheweb.net/how_to_turn_on_weber_grill_spirit_2.pdfIn PDF document text
    • http://pobesegu.scienceontheweb.net/zidowubab.pdfIn PDF document text
    • http://luminar2-download.xyz/is_the_uk_criminal_justice_system_fairpiqux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489969/normal_601e0cc29b346.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/the_lemon_orchard_line_by_line_analysis.pdfIn PDF document text
    • http://jojidasusesot.sportsontheweb.net/casio_pro_trek_prg_270.pdfIn PDF document text
    • http://kolagozisil.mywebcommunity.org/how_to_be_a_good_pediatric_nurse.pdfIn PDF document text
    • http://lusolakidareve.mywebcommunity.org/turbo_mailer_license_key.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381289/normal_5ff90626608f5.pdfIn PDF document text
    • https://cdn.sqhk.co/xufatirumina/7jc8did/mini_dachshund_weight_at_10_weeks.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://ziwivazud.onlinewebshop.net/dilak.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/sutogadeguvijeno.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAE 4640 bytes
SHA-256: 99e32abb0951ce330b4a9fa63d7ba8a1efccc7d79383e506a027a10a76df12d9
font_01_sfnt_off0000fb87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB87 12160 bytes
SHA-256: 8d887bb002d31851c39a092cb1548ed78dfe6e9951119ac9ff2c9aafc7b0165c
font_02_sfnt_off00012218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12218 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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