Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c0d08e755aad385…

MALICIOUS

PDF

65.1 KB Created: 2021-03-02 20:55:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 817a7f94a8b9ace4a5ad1ed8c872493a SHA-1: af29bd894b3f800657af596f3a0d39effbc4072d SHA-256: 9c0d08e755aad385971503e1ff2a57c527e89e9cac9174f0b685848d0fd460c4
196 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
  • 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.
  • 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://maypoin.ru/award?keyword=h20+mop+x5+replacement+pads+australia PDF link annotation
    • http://vipimuxatomefi.medianewsonline.com/the_best_solar_motion_detector_lights.pdfIn PDF document text
    • https://cdn.sqhk.co/sixerusesebu/ejfghib/5907797192.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/Nx3Fajf/drums_parts_washer.pdfIn PDF document text
    • https://cdn.sqhk.co/zibepidok/O3diiHp/gemiva.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwesedujila/f7JGggf/podoroxabanumujakolada.pdfIn PDF document text
    • https://cdn.sqhk.co/kutupejotige/di9fJie/fovujipetimotu.pdfIn PDF document text
    • https://tesiligozi.weebly.com/uploads/1/3/1/4/131407846/vogatar.pdfIn PDF document text
    • https://cdn.sqhk.co/fasotaluvose/Mxiguje/gijimomotazof.pdfIn PDF document text
    • https://cdn.sqhk.co/wexovezojab/hdxhejY/jarep.pdfIn PDF document text
    • https://cdn.sqhk.co/rugofufol/cFghhc0/63856622473.pdfIn PDF document text
    • https://cdn.sqhk.co/silutoge/fcshajj/natural_history_of_rheumatoid_arthritis.pdfIn PDF document text
    • https://cdn.sqhk.co/jubawiwa/hhhhi0O/50086552306.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gixarewujedel.atwebpages.com/math_4_trig_ratios_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/59347486186.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_off0000c19a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC19A 5648 bytes
SHA-256: 5d2a4ff020f9d248286107de1c8ae3729afa924553cf6468bf3de9f66401f060
font_01_sfnt_off0000d4bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4BD 10144 bytes
SHA-256: 42726ac39aa37ea81a7dade7aafe26038f0519095bc93cd033500c020183dd31