Malicious PDF — malware analysis report

Static analysis result for SHA-256 afd20bb46779cb33…

MALICIOUS

PDF

73.1 KB Created: 2021-02-22 09:07:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: af6fae851ed0eb2edd6d6411fa905e93 SHA-1: 3501e6286a07c2741bbfbf60d820715847aa0ba2 SHA-256: afd20bb46779cb33071d9bd5fe3b6b1774076b54364bd5bdb901c29eff6dfdec
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/wix?keyword=mophie+owners+manual PDF link annotation
    • https://cdn.sqhk.co/gawukale/VCaLkb5/vengeance_the_old_school_rpg_android.pdfIn PDF document text
    • https://cdn.sqhk.co/gibuzini/jbdAFha/neon_live_wallpaper_apk_download.pdfIn PDF document text
    • https://jigugupidutugi.weebly.com/uploads/1/3/0/8/130813301/6b21ac6.pdfIn PDF document text
    • https://gedibixofesona.weebly.com/uploads/1/3/4/6/134688069/c9d0d76d6737bd1.pdfIn PDF document text
    • https://cdn.sqhk.co/puzadowoke/dDhhgco/trafalgar_senate_polls_north_carolina.pdfIn PDF document text
    • https://cdn.sqhk.co/faruzikako/hfzOjgA/post-_it_dry_erase_surface.pdfIn PDF document text
    • https://mawovajexajadow.weebly.com/uploads/1/3/0/8/130874262/72a2dd76505b7f.pdfIn PDF document text
    • https://ruxunomitebapat.weebly.com/uploads/1/3/1/6/131606858/98ecb1c017.pdfIn PDF document text
    • https://cdn.sqhk.co/piredonina/gd8gggg/color_rings_circle_puzzle_game.pdfIn PDF document text
    • https://cdn.sqhk.co/naludibeg/lgifaii/95152687567.pdfIn PDF document text
    • http://fodokimi.22web.org/nombres_de_dios_en_la_biblia.pdfIn PDF document text
    • https://cdn.sqhk.co/nokotadi/KKdiIia/49740419358.pdfIn PDF document text
    • http://rizuxikasosokeg.22web.org/24080490177.pdfIn PDF document text
    • https://gadiziwit.weebly.com/uploads/1/3/1/4/131406086/jivova.pdfIn PDF document text
    • https://cdn.sqhk.co/keropolor/8ahfwFi/81692339023.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fazafowunop.epizy.com/80056307534.pdfIn PDF document text
    • http://xepalufozakot.epizy.com/xebutiduxerelob.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_off0000e4dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DC 5156 bytes
SHA-256: de35f286acccc5257423ab31afb04d540f0fcb8ce6c7a473d69cd7a71c081223
font_01_sfnt_off0000f651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF651 9792 bytes
SHA-256: 8678146fff120b67afa358acd5916f373ddaea176a9f66a048df861ed1beec11