Malicious PDF — malware analysis report

Static analysis result for SHA-256 180008452fcd973b…

MALICIOUS

PDF

69.6 KB Created: 2021-03-02 00:43:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cf6f46686fc5b2e36f0227d6c57950c2 SHA-1: 83ecc96e3624511fcbdfb65e7aef545927c2aaae SHA-256: 180008452fcd973b9f388e468de059fe40723239fb5fd0ae8fac278a454c95c5
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/award?keyword=shark+press+and+refresh+user+manual In PDF document text
    • https://static.s123-cdn-static.com/uploads/4412758/normal_600945ace1657.pdfIn PDF document text
    • http://pavawafupef.66ghz.com/learning_to_see_ebook_free.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489850/normal_5ffcce29bd0a9.pdfIn PDF document text
    • http://osummer.space/bass_booster_volume_booster_sound_equalizeru699h.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/hbhhigq/the_voice_guest_coaches_season_18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449616/normal_601c025f2f706.pdfIn PDF document text
    • http://iglivesupportteam.com/berocca_performance_usad9l9l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387586/normal_6028b1b03cc4e.pdfIn PDF document text
    • http://closemaze.com/physics_class_9_motion_notesa2z8w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420448/normal_6027e8925df34.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://vijevumoni.epizy.com/kabazavas.pdfIn PDF document text
    • http://vofuwelezetez.rf.gd/loxufukenakavupegosik.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c6f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6F8 5092 bytes
SHA-256: d29c6038e2b9a7c04ac58857b3a09185de727f5faf0a336403c8c0543550c668
font_01_sfnt_off0000d803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD803 10324 bytes
SHA-256: 54bc2ac8d61545d41d568f30d5e88d71fc7e14ac23a06fb0d829e0b4337b6c65
font_02_sfnt_off0000fb6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34