Malicious PDF — malware analysis report

Static analysis result for SHA-256 943a714f2637a98f…

MALICIOUS

PDF

73.1 KB Created: 2021-02-25 22:50:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2fabce7c6bfdaaef27cfda4800f70257 SHA-1: 81ae759c2bb13fe3eea153c2219a86ce0cc9698e SHA-256: 943a714f2637a98fb7fa9357740100266f6c1e80121e10f462d46afae7928015
224 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
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://yafferge.ru/award?keyword=dream+of+snake+bite+on+both+hands In PDF document text
    • http://getyourscore.info/buzifuxisagoq4j6d.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/ijbuiiJ/zesogoxufavujuziwulipeju.pdfIn PDF document text
    • http://mirror-x.org/21820928146jaj59.pdfIn PDF document text
    • https://cdn.sqhk.co/rawerusiwala/CifMRf4/jisubomise.pdfIn PDF document text
    • https://cdn.sqhk.co/wojomisew/7omotaM/70652113693.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388065/normal_5fd6e787ae0f6.pdfIn PDF document text
    • https://cdn.sqhk.co/xudevekelefe/ia2xgfw/draw._io_desktop_app_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491414/normal_6002a335227ae.pdfIn PDF document text
    • http://legendarycraft.ru/19169498616px2e3.pdfIn PDF document text
    • http://triple-doska1.club/inseta_re5_study_guide7wowq.pdfIn PDF document text
    • https://cdn.sqhk.co/nifijagik/0hhjdhl/download_sound_equalizer_for_windows_7_32_bit.pdfIn PDF document text
    • http://twoup-viktoria.online/bansal_classes_study_material_freelugts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412173/normal_5fe029b828de5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476943/normal_602c6bf2a877e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460677/normal_6035153faa648.pdfIn PDF document text
    • https://cdn.sqhk.co/muxigatatini/dLPihia/fall_guys_hexagon_tips.pdfIn PDF document text
    • http://securityofusersdevicesonline.site/godobehwjmt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460966/normal_602462fa475f1.pdfIn PDF document text
    • http://watertea.space/charles_aznavour_for_me_formidable_partitionzsq1j.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_off0000e1dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DC 5316 bytes
SHA-256: 2077ca0f09ac1c2e6fd013d246693be63cfd97447af5a83f7384a4aa43b288c0
font_01_sfnt_off0000f3ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CA 10380 bytes
SHA-256: 44018467b299963424deeabf602ffe4b983e890f25e159885ea151e1c8909fec