Malicious PDF — malware analysis report

Static analysis result for SHA-256 32d2afa8664ebabe…

MALICIOUS

PDF

85.4 KB Created: 2021-03-18 05:59:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 1580e499e1f51dc7f3a181012bce7741 SHA-1: 99fed6e9e6a759da069297db9d32e37a55ee8a5a SHA-256: 32d2afa8664ebabe782cfd4e1c385b4b230434b57751968218a12925f1452042
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://jottigo.ru/strik?utm_term=journey+to+the+center+of+the+earth+3d+filmyzilla PDF link annotation
    • http://kuxni.su/lg_g_vista_2_frp_bypassw8b4m.pdfIn PDF document text
    • http://wiinorama.fun/free_fire_game_karna_hai_jiotcalz.pdfIn PDF document text
    • http://agent-ritual495.online/kosijexidagiv621z9.pdfIn PDF document text
    • http://upsbox.ru/43090576232bwlab.pdfIn PDF document text
    • http://harkateine.fun/piwura098ls.pdfIn PDF document text
    • http://golomashvanna.xyz/gefetemebutuwisegodogodaan668.pdfIn PDF document text
    • http://aduo5.online/bloons_td_6_apk_free_originalksa8d.pdfIn PDF document text
    • http://cosmeteca.com/does_draco_die_in_half_blood_princej5s8r.pdfIn PDF document text
    • http://ecoservice-vlad.ru/xawefen1v0.pdfIn PDF document text
    • http://megalit-korolev.ru/varulutxvbez.pdfIn PDF document text
    • http://money-team.site/soil_mechanics_and_foundation_engineering_by_punmia_downloadhnmea.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485939/normal_600924595fb0e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408719/normal_60356e7dcf0f1.pdfIn PDF document text
    • http://furniture21.online/weber_spirit_e-310_natural_gas_grill_blackx0567.pdfIn PDF document text
    • http://future-techno.ru/rumeweja1tp3v.pdfIn PDF document text
    • http://dronextactical.xyz/kitoptda8s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401540/normal_602eafffcea7b.pdfIn PDF document text
    • http://claire-irk.ru/the_book_of_enoch_free_audiobookok8i2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474231/normal_602ec72bb9c69.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
    • https://uploads.strikinglycdn.com/files/8ce86041-78e8-47dd-a3b4-7090d4e1bb22/kusewularikeguvamafak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d4bd97e-55b8-4d5f-8d3d-3f3162c03685/pofosagemopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fae5a80e-65a5-447b-9f08-7032a255e3e6/93345386827.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0f76c13-ae40-4056-8c96-55d3b242624c/area_of_compound_shapes_worksheet_with_answers_tes.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_off0001009d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1009D 5272 bytes
SHA-256: 41363fcdef70f4275e4aa20e74e0811169ac2b68d9c1b20d2acaf61891c9d790
font_01_sfnt_off00011266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11266 11716 bytes
SHA-256: 8b382ae9da31bae6e202389552e07feb49c52d4efb67a82c01ba547824dea629
font_02_sfnt_off000139a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139A8 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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