Malicious PDF — malware analysis report

Static analysis result for SHA-256 c438c08b8a800745…

MALICIOUS

PDF

65.5 KB Created: 2021-03-02 04:08:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f32c97b0061551a74ae0c33c30327ce6 SHA-1: 27bc028ec0432b2934c4a33c581d02b4cf2c1e1b SHA-256: c438c08b8a800745c6be4ca59aa22adbef8182e6f2cfdb410e3fa45ad44f7dfe
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://druttle.ru/wix?keyword=edelbrock+1405+installation+manual PDF link annotation
    • https://nefabilaj.weebly.com/uploads/1/3/1/4/131438225/3887459.pdfIn PDF document text
    • https://cdn.sqhk.co/relulapezele/jiaOggq/live_bingo_game_ideas.pdfIn PDF document text
    • https://mejojesakawevud.weebly.com/uploads/1/3/1/4/131438193/6ffd7e906.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495843/normal_6007a28d57ca5.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/fggvgeP/battleship_movie_battleship.pdfIn PDF document text
    • https://vowexigap.weebly.com/uploads/1/3/1/6/131636774/wibinironasezax.pdfIn PDF document text
    • https://fejejupusojovif.weebly.com/uploads/1/3/1/4/131483068/foguz.pdfIn PDF document text
    • https://mopopapepiror.weebly.com/uploads/1/3/2/7/132741339/salirigitifan_gitisovixasa_levelilixed_tosixor.pdfIn PDF document text
    • https://xaweworamek.weebly.com/uploads/1/3/4/6/134610398/gadizi-sujakoxigan-sazevukakipape-gudadotojesafel.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446158/normal_5fe25664c2162.pdfIn PDF document text
    • https://temozune.weebly.com/uploads/1/3/0/7/130738928/zodalixabawiv.pdfIn PDF document text
    • https://kemizanina.weebly.com/uploads/1/3/0/7/130738765/bepajuzixidomo_ninefedego_vasaginowafifud_xomizirimugaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462980/normal_600e3a1907e96.pdfIn PDF document text
    • https://ralifanexipoker.weebly.com/uploads/1/3/1/3/131380500/1526db8105.pdfIn PDF document text
    • https://cdn.sqhk.co/lilapanorup/hgAciaF/photo_finish_horse_racing_history.pdfIn PDF document text
    • https://cdn.sqhk.co/zunezafi/pckjbjf/tubonufakixekerizilogi.pdfIn PDF document text
    • https://cdn.sqhk.co/zipodumup/jhjhJha/four_color_block_puzzle.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/jenisozazewubo/bojixuziburudizofenobaned.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/wamujalezatewuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/figamulowazurupiwava.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_off0000c47e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC47E 5652 bytes
SHA-256: 72c48fdcee0bdadcb23931b1de5cb903aa606e3c57754bc669df779a1f30b418
font_01_sfnt_off0000d7ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7AC 9716 bytes
SHA-256: 37a81193d49956c4dedf68f280b9c214ec059b8f056f09aefcb270f638f28c77

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