Malicious PDF — malware analysis report

Static analysis result for SHA-256 b625eea32ec19af9…

MALICIOUS

PDF

61.8 KB Created: 2021-02-13 14:24:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 984f47d7d6eb7ed4963b7dd1c0b5dabf SHA-1: 58ade2939d5b5bf4d2b9b84e20ff445fd419d4a8 SHA-256: b625eea32ec19af979226b6d7a042e33394025be34eee4cf949f67f05afe4d07
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/wb?keyword=kaththi%20tamil%20movie%20mp4%20songs%20free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4497093/normal_6003336a3039c.pdfIn PDF document text
    • http://imkl-checker.com/pakerex51f0d.pdfIn PDF document text
    • http://lishop.site/dhoom_2_tamil_dubbed_free_download4q141.pdfIn PDF document text
    • http://shopmzm.site/tunemawinetudopobadugagph5dr.pdfIn PDF document text
    • https://cdn.sqhk.co/pesegozod/hbtHnjf/14774022965.pdfIn PDF document text
    • http://ing-jobs-opportunities.com/lagu_bertepuk_sebelah_tangan_endank_soekamtidzw63.pdfIn PDF document text
    • https://cdn.sqhk.co/totafeta/eichdx3/laminusagiguwemabe.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/6Qie6hb/76772957026.pdfIn PDF document text
    • http://d2-club.ru/27475077173hqdg7.pdfIn PDF document text
    • https://cdn.sqhk.co/duziketopefi/dFnfjdV/darkest_winter_last_survivor_4pda.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/sepovutapakogaf/fuvoj.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/formal_letter_template_open_office.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/99951222586.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/vocabulary_spelling_city_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/79236130769.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_off0000b37c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB37C 5432 bytes
SHA-256: 530689a989aa1284372e4ed7baf30207980ae4bea98858981634f648595af4f6
font_01_sfnt_off0000c5e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5E3 10708 bytes
SHA-256: 4073c8aad1edc8904fb525dd1739bbdca2d2b772d2adf158c631e0e5a3b74916