Malicious PDF — malware analysis report

Static analysis result for SHA-256 41cbde5cb1896b78…

MALICIOUS

PDF

66.8 KB Created: 2021-02-27 07:55:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a1e7b9540597a4f69c4741ffc05f1306 SHA-1: 87b0fb9454a1c388100c99feec1a6863571c8491 SHA-256: 41cbde5cb1896b78449dd440f64ceeba830223dc6951d9d93a17f4b2f2d01358
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=synth+software+free PDF link annotation
    • http://lixodamevurobar.mygamesonline.org/sekebixi.pdfIn PDF document text
    • http://voirlo.xyz/90445112692kmc5c.pdfIn PDF document text
    • http://beautysss.site/ge_spacemaker_microwave_door_handle_replacementl3g50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371788/normal_5fc71adfe36b1.pdfIn PDF document text
    • http://boomerangoo.site/cosmos_flower_plant_imagestl944.pdfIn PDF document text
    • https://cdn.sqhk.co/zejizoguzut/h6Signh/44981288943.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367632/normal_603300c41e2a7.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/Nqihxe4/30633145437.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/48959368641.pdfIn PDF document text
    • https://cdn.sqhk.co/fuvebopeweb/NTShdSN/56310730241.pdfIn PDF document text
    • http://vipimuxatomefi.medianewsonline.com/68111012627.pdfIn PDF document text
    • http://gilumesu.mypressonline.com/the_secret_law_of_attraction_streaming_vostfr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409413/normal_5fe9ca0627475.pdfIn PDF document text
    • http://didazema.mypressonline.com/rocketfish_wireless_rear_speaker_kit_review.pdfIn PDF document text
    • http://joblanc.xyz/iadt_trauma_guidelinestsamq.pdfIn PDF document text
    • http://probmaka.tech/elements_of_poetry_alliteration_definitionfstt5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuxoxokazutuv.myartsonline.com/mirog.pdfIn PDF document text
    • http://nisetekotixob.myartsonline.com/what_is_the_potter_house.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_off0000c966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC966 5120 bytes
SHA-256: 86640c27517ea0c9ab49af9a1ccf067bfbf5f57a587106dade484af8c4685bb6
font_01_sfnt_off0000dae3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE3 10368 bytes
SHA-256: 1a6af0362c88c8a8f9e2dbf2878a91f5934906cefcf761f45192903c21326d73