Malicious PDF — malware analysis report

Static analysis result for SHA-256 87cae063d79ad4fa…

MALICIOUS

PDF

72.0 KB Created: 2021-02-26 01:52:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7352668b7463366be0817f06cd5c40dc SHA-1: 4ff1ee740c2e7b0887451d056ba1184e204d2e04 SHA-256: 87cae063d79ad4fa77fd39308b2070c92bb73b415908adfcc1049b357154dfb7
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://jacksth.ru/123?utm_term=how+to+troubleshoot+my+rca+tablet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489404/normal_60282b407d862.pdfIn PDF document text
    • https://kogafisefog.weebly.com/uploads/1/3/1/4/131438876/tunaregojefeza.pdfIn PDF document text
    • http://eagleaff.com/bexijafaxodinokaxaruhofqk.pdfIn PDF document text
    • http://alania365.ru/809943385970uy7c.pdfIn PDF document text
    • http://lomigakorak.getenjoyment.net/punejed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505102/normal_60175188168cc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471109/normal_603606235380c.pdfIn PDF document text
    • http://lnstagramverifiedbadgeservice.com/79841334910vau1n.pdfIn PDF document text
    • http://jekeluxuto.mywebcommunity.org/paturiboxixamivimu.pdfIn PDF document text
    • http://ayazshabutdinov.club/911206491485fji2.pdfIn PDF document text
    • http://finonit.mypressonline.com/tuvimavagufabuv.pdfIn PDF document text
    • http://meblik.su/tamagotchi_p1_life_cycle1eelr.pdfIn PDF document text
    • http://swiss-gear.store/big_data_analytics_salaryce06f.pdfIn PDF document text
    • http://realnoe-obshenie.online/call_me_by_your_name_script_fatherkqnds.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4528260/normal_5fdef2808dcd7.pdfIn PDF document text
    • http://ozalupa.space/rirojajizojapudafikopigi45r25.pdfIn PDF document text
    • http://torchqbfl.fun/45844279547aei5h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jenesigafepi.epizy.com/aasld_idsa_hcv_guidelines._2017.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_off0000db96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB96 5336 bytes
SHA-256: 00f0e774732179b10102f330397da291860f842bac75aa7f58e2be93c6755191
font_01_sfnt_off0000eda0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA0 11032 bytes
SHA-256: af796a91bebe59e833f5b0940bd1a9ef96281c587a87d3a8c682260885272035