Malicious PDF — malware analysis report

Static analysis result for SHA-256 257e2171c44fda16…

MALICIOUS

PDF

75.5 KB Created: 2021-03-10 23:25:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ddc8d89f2074704b14987a95290b51db SHA-1: dbf8ae6c5b7d66ca3637f3ad955d81534fa1c109 SHA-256: 257e2171c44fda1648de05e46f1de50c1108350d6568ecdf3740049b7516ce73
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://dugedepap.ru/123?utm_term=windows+8+cd+rom+driver PDF link annotation
    • http://zabavnyi-slon.ru/how_to_use_the_elite_platinum_pressure_cooker36503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461751/normal_60126c2fbd838.pdfIn PDF document text
    • http://copyrightreports.com/norumabafenenuea385.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445739/normal_601d93f7457db.pdfIn PDF document text
    • http://megalit-korolev.ru/papizeb3i2zt.pdfIn PDF document text
    • http://fufirewavit.getenjoyment.net/53696120884.pdfIn PDF document text
    • http://edarudost.online/avast_premier_full_crack_201930mlc.pdfIn PDF document text
    • http://byt-upak.ru/palladium_rifts_miniaturesx6uwu.pdfIn PDF document text
    • http://copytoshka.ru/5523006249443jwl.pdfIn PDF document text
    • http://magicwoolshop.com/duzagelimozulanexeboo1mdu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393361/normal_602c87cd06991.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421224/normal_603f7d85410ff.pdfIn PDF document text
    • http://tamakar.tech/sebejujikuzut5doe5.pdfIn PDF document text
    • http://microdigitalmeter.xyz/my_hero_academia_englishd03ib.pdfIn PDF document text
    • http://xufededubumavif.scienceontheweb.net/digital_fortress_audiobook_free_download.pdfIn PDF document text
    • http://fruitslope.online/transformar_hectares_metros_quadradoskw8kn.pdfIn PDF document text
    • http://voyazh-shina.com/how_to_upgrade_to_omnisphere_27nqte.pdfIn PDF document text
    • http://teenagetutor.online/tone_it_up_fitness_planc8dae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE919 5204 bytes
SHA-256: 18561dd08701691ba0b3887fc9602c7aec59397a911e5382636b1d9e996548d3
font_01_sfnt_off0000fad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD4 11208 bytes
SHA-256: 355845e4422e24a88465d3dcb8c915a449723a542099ce9981248b89114d3726