Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3fda8819786fe31…

MALICIOUS

PDF

75.7 KB Created: 2021-01-30 13:33:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ad70df215b50073a6554702f7c8b497d SHA-1: bf2cab53c739f75d9791fe7a1b4993a7b8d675b1 SHA-256: e3fda8819786fe310c45bd0a6c60ebd10242ddd9f11da337b57b65003d481a25
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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://leonvi.ru/wb?keyword=corrugated%20boxes%20wholesale%20canada PDF link annotation
    • https://cdn.sqhk.co/tedatekalo/4Igb5he/eset_mobile_security_antivirus_full_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/letaziseb/aVW2XvO/big_bang_episodes_free.pdfIn PDF document text
    • http://scotiaenlineape-personas.com/ged_math_practice_problemssu8y5.pdfIn PDF document text
    • http://findssldz.xyz/mettaton_ex_battle_simulatorvlk9b.pdfIn PDF document text
    • http://lavka-karamel.ru/asuran_full_movie_tamil_isaiminiilhud.pdfIn PDF document text
    • https://petuxomurekag.weebly.com/uploads/1/3/0/8/130874153/f2dc47.pdfIn PDF document text
    • https://cdn.sqhk.co/vopovaroxamo/HTWhgvO/sutewurovivef.pdfIn PDF document text
    • https://cdn.sqhk.co/fenozidu/dsipLih/cannon_balls_ark.pdfIn PDF document text
    • http://axecheat7.xyz/drum_kit_metal_plate8n21s.pdfIn PDF document text
    • http://lnstagramoriginal.com/61560234461g6s9b.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/zowejunef/gizepev.pdfIn PDF document text
    • http://lokokojorivumi.rf.gd/performing_arts_administration_jobs_melbourne.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/chicken_curry_law_movie.pdfIn PDF document text
    • http://rikonuge.rf.gd/anari_songs._pk_free.pdfIn PDF document text
    • http://kuwokezolofe.epizy.com/eat._co._uk_nutritional_information.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_off0000ebc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC7 5408 bytes
SHA-256: ed505ff0c975d5b4cc7139fd400ed205d710e240511f99f463f064810a3e1856
font_01_sfnt_off0000fe33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE33 10532 bytes
SHA-256: b212cb9c2fad5c5c22eb340697ef36a27cd26b6759f1a191fce91c5b764cd3d2