Malicious PDF — malware analysis report

Static analysis result for SHA-256 1350155ba6c386c7…

MALICIOUS

PDF

67.0 KB Created: 2021-02-09 06:33:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 02e20fe2957561013a4f99a89a0c6e18 SHA-1: b636823f1b93db2709641033d320adf3a298b4ab SHA-256: 1350155ba6c386c735bddd19364c8dd13bbad3f8b8d094e5e537b8d1796e5153
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://jacksth.ru/123?utm_term=journey+to+topaz PDF link annotation
    • https://xujuwoxevosu.weebly.com/uploads/1/3/4/8/134896670/1626172.pdfIn PDF document text
    • https://gidunixodon.weebly.com/uploads/1/3/5/3/135322071/9413d50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473415/normal_5fd3cd6f1215f.pdfIn PDF document text
    • https://cdn.sqhk.co/fokivetezabu/RDHa7ZN/medieval_war_horse_crossword_clue.pdfIn PDF document text
    • https://xukotonaxi.weebly.com/uploads/1/3/1/4/131453431/49accdab733f.pdfIn PDF document text
    • https://cdn.sqhk.co/doxufojixene/f4Chdmb/25707071572.pdfIn PDF document text
    • https://balolekuzuwuvaz.weebly.com/uploads/1/3/0/7/130740598/pazinadab_vekefejutepa_zuroduratidimi_navatedotiw.pdfIn PDF document text
    • https://cdn.sqhk.co/gagobuniponi/6iijbyT/jonepuzuvanalovajupunejo.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/fizaxo/android_room_database_insert_example.pdfIn PDF document text
    • http://dujazenemelix.epizy.com/appointment_letter_format_for_design_engineer.pdfIn PDF document text
    • http://raduniti.epizy.com/87435833493.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/vernier_caliper_accuracy.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/personal_profit_and_loss_statement_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/free_email_christmas_party_invitation_templates.pdfIn PDF document text
    • http://fudojozijenabux.epizy.com/pronoun_antecedent_agreement_worksheet_answer_key.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_off0000c9ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9CE 4744 bytes
SHA-256: 6dc9eabfb737f10f2780fb871457159ce1685bcfc16ff6fdd865e585e864e93c
font_01_sfnt_off0000da15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA15 10900 bytes
SHA-256: 8877c1537c01e6819e6e6e62306307e25aed86a79885b940bc1975f23b03b1af

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