Malicious PDF — malware analysis report

Static analysis result for SHA-256 c02de12b1042ed2f…

MALICIOUS

PDF

80.6 KB Created: 2021-04-27 04:56:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 60f4696e0d832c01d7724b42616905d1 SHA-1: 1ca13b91e62d551f517d3a8e75384013167e6bdc SHA-256: c02de12b1042ed2fd55fb213e12cd4504a25f65d9bfd447cfb6f81324b07c6d8
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URL pointing to 'bologen.ru', which is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a lure related to weight loss, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://bologen.ru/strik?utm_term=the+liquid+diet+for+weight+loss PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489839/normal_6054562cb9339.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/air_pollution_control_act.pdfIn PDF document text
    • http://figuxovutofid.mygamesonline.org/bioinorganic_chemistry_notes_for_csir_net.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460057/normal_5fde208da8ccb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495393/normal_5ff2d315aac1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409619/normal_6058e0409a5f0.pdfIn PDF document text
    • http://ramifapufebi.scienceontheweb.net/41868886478.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392470/normal_60616b461a7ab.pdfIn PDF document text
    • http://wufamega.scienceontheweb.net/remington_700_sps_tactical_6.5_crd_review.pdfIn PDF document text
    • http://saxosoxajivovud.medianewsonline.com/beam_bending_formulas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://ecfc1f44-6648-4072-bff5-6ee4adcfbe4f.filesusr.com/ugd/e5a943_1f2af3753d17449a98f84e112b2ac73a.pdf?index=trueIn PDF document text
    • https://0bc2ebcf-5b85-435c-8290-6c6350a165f2.filesusr.com/ugd/ee98f5_ed5c019cc1b74306b6c1d29c72552736.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/how_to_factory_reset_rca_tablet_with_keyboard.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ff163b-4b03-4a7b-97fc-b9c193d786d9/easy_crochet_patterns_for_left_handed.pdfIn PDF document text
    • https://62bfe9e3-d01a-456c-9d14-3ac71290fd99.filesusr.com/ugd/cfe640_805df74c3cd64a59b20948ac62f0efaf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/piwanisaj/hp_deskjet_2620_ink_cartridge_price_in_egypt.pdfIn PDF document text
    • http://wumafopid.onlinewebshop.net/3333953125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5580c69-767d-40ba-8bd4-5b0f91dacb81/dipak.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/53799206761.pdfIn PDF document text
    • http://zeroxezubanalil.onlinewebshop.net/fegedakukuzusosumoto.pdfIn PDF document text
    • http://gegetebipa.atwebpages.com/conformational_analysis_of_cycloalkanes.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/14238304213.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6023ec6f-f8e8-406d-9f97-351f57f54090/86210846093.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/disney_world_epcot_fireworks_schedule.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_off0000fe67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE67 5124 bytes
SHA-256: be02c6e5b5f9473df3e041cd0d628f4ada54b5acdf0137fac174ff1de94bc94a
font_01_sfnt_off00010fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FDE 10760 bytes
SHA-256: 8324407786123b07352b10627a009f8a5d17f4f4398df179808edf5962f5e4c8