Malicious PDF — malware analysis report

Static analysis result for SHA-256 13254f3c792d9c8d…

MALICIOUS

PDF

64.5 KB Created: 2021-02-28 05:37:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: c9449a3c1c2e43fabce062b6f0fe9b3f SHA-1: 20d0840f99f01eed0f4cab660d7250207c327b3e SHA-256: 13254f3c792d9c8d21b49d3069c0114052b766506cbdcd140d1974d2f1a2aa71
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://mezovuduw.ru/award?keyword=autocad+designer+salary+in+pakistan PDF link annotation
    • https://cdn.sqhk.co/kigaratak/Ch1AgjG/33803368603.pdfIn PDF document text
    • https://cdn.sqhk.co/nozedimasav/wXESjc4/53969711623.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445558/normal_5ffdd1a12adbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447095/normal_5fe7a08a3b018.pdfIn PDF document text
    • https://cdn.sqhk.co/bovefonot/qFif4jj/jack_s_new_adventures_game_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465388/normal_600d4127258cd.pdfIn PDF document text
    • https://cdn.sqhk.co/sabiwizi/iifhcgZ/xifogusepaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/siloneza/7iaRjiT/rusobigiza.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/tobovunoberiki/85962275154.pdfIn PDF document text
    • https://s3.amazonaws.com/polexebuj/67924612982.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/51139742983.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/phn_mm_tch_file.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_off0000bfc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFC1 5396 bytes
SHA-256: a2c3eedfd5464168756423a0fac9326d49c5db972c6e75b58f7c4e9f9ebfd29f
font_01_sfnt_off0000d236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD236 10768 bytes
SHA-256: ef71037b374951bef4b5db377b196f233fca98cba8ba6dfba88d647be1652e7e