Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7431828a503d830…

MALICIOUS

PDF

70.2 KB Created: 2021-02-19 00:52:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0410a660d282aed5786cba12cce72a55 SHA-1: c133f8cf6f191324ccd620c9f98124739e9382c8 SHA-256: c7431828a503d830076e3a60c0e61b531a25c9ce976ce0b285880b9bcd0875aa
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/123?utm_term=element+smart+tv+troubleshooting PDF link annotation
    • http://sexedate69.site/latest_odia_film_song_2018dukd7.pdfIn PDF document text
    • http://steelsho1.club/12514927796mbhhn.pdfIn PDF document text
    • http://auto-agents.space/thor_ragnarok_streaming_vf_gratuitnqun4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446264/normal_6014a0d78eec9.pdfIn PDF document text
    • http://doordash.fun/16214343388qqlek.pdfIn PDF document text
    • https://kojemugolipoxo.weebly.com/uploads/1/3/4/7/134729864/000321cffed.pdfIn PDF document text
    • http://housefashion.ru/191775435861zn8x.pdfIn PDF document text
    • https://lijuvimu.weebly.com/uploads/1/3/0/7/130775306/2212776.pdfIn PDF document text
    • http://xitnet.fun/40775067808ncb7r.pdfIn PDF document text
    • http://umdtheatre.ru/pdf_scanner_for_android_free_downloadxh3tu.pdfIn PDF document text
    • https://zipenuwoku.weebly.com/uploads/1/3/1/0/131071258/fotepiwo_mopoxako_ludoxojutojiku_durasazufodowo.pdfIn PDF document text
    • http://wildber.store/d_d_beyond_character_sheet_iosqdv1p.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/voxulija/grievance_letter_template_free_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/ernhrungsplan_anabole_dit.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/13281805730.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_off0000d7c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C1 5256 bytes
SHA-256: 887e994f037a6c7231ab54af921de8a1d60eabeabbacc24f94935078390ae9a7
font_01_sfnt_off0000e980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE980 10176 bytes
SHA-256: 31ce8253c0c09ce09127151f40f437845b9afc0122b93bd35ce63cabb2d0215c