Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa81fbc0b7087c42…

MALICIOUS

PDF

81.0 KB Created: 2022-04-02 17:03:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: 35e7c85ef703fc2d113adccafac5084e SHA-1: 3dadaa92bc756ec5696ffcd563eadae2b4d2cf63 SHA-256: aa81fbc0b7087c422dfc3c15ad871b24d487d17698a537564eaa4b606a4249e4
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • 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://lovig.co.za/YmrXLWy8?keyword=are%20polk%20good%20speakers PDF link annotation
    • https://kasitawudak.weebly.com/uploads/1/3/1/3/131380619/813203b6ad0320d.pdfIn PDF document text
    • https://fozejabaf.weebly.com/uploads/1/3/5/3/135305581/vodav.pdfIn PDF document text
    • https://jiwalevimube.weebly.com/uploads/1/3/4/8/134870165/3e2c61e418d2cb.pdfIn PDF document text
    • https://longislandinvestmentadvisors.com/nini/userfiles/file/ruvazukarar.pdfIn PDF document text
    • https://bejulukif.weebly.com/uploads/1/3/4/7/134746679/1806f5aa85a2eea.pdfIn PDF document text
    • https://piguvedulo.weebly.com/uploads/1/3/4/7/134724556/zupeze.pdfIn PDF document text
    • https://zasosefudasu.weebly.com/uploads/1/3/1/8/131856937/fenatisod.pdfIn PDF document text
    • http://samocvet.org/foto/ck/files/45687629189.pdfIn PDF document text
    • https://pefeduvoxonix.weebly.com/uploads/1/3/4/0/134017609/pexuwotaged-pevadonijoletes-nufiragezil.pdfIn PDF document text
    • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/tilitipebuxunuruzejuke.pdfIn PDF document text
    • https://paboripiniw.weebly.com/uploads/1/3/0/7/130739049/e835317f57.pdfIn PDF document text
    • http://nobody-films.com/bpms/includes/fckeditor_uploads/userfiles/file/71344081749.pdfIn PDF document text
    • http://chromavials.com/d/files/63562226283.pdfIn PDF document text
    • https://wirujiko.weebly.com/uploads/1/3/4/9/134900452/d00d94681.pdfIn PDF document text
    • https://www.monacruises.com/html/scripts/ckeditor/kcfinder/upload/files/29721307391.pdfIn PDF document text
    • http://eg-connect.com/php_codes/Scott/VieauAssociates/code/userfiles/file/48217150971.pdfIn PDF document text
    • https://rubuvewoxuvima.weebly.com/uploads/1/3/4/8/134873715/sadefosupage_kadimarujon_widibefiv.pdfIn PDF document text
    • https://www.fondazionepolis.it/blog/ckeditor_fullcolor/kcfinder/upload/files/buzif.pdfIn PDF document text
    • https://otomatcilarmetal.com/otomat/upload/files/nigefizepeporatof.pdfIn PDF document text
    • http://paymentsbusiness.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1622781e1e9a8c---juxusonizox.pdfIn PDF document text
    • https://lifexusubanipi.weebly.com/uploads/1/3/4/3/134377686/1533766.pdfIn PDF document text
    • https://sotemukolewidiv.weebly.com/uploads/1/3/4/6/134660154/d8c418faaf780.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B7 17280 bytes
SHA-256: 31f1109bb511fd589dce93c32d7441e23e76942459b446b0396dfc7999c052eb
font_01_sfnt_off00010703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10703 10344 bytes
SHA-256: c1506d3b27272b71f5ff1399293d51c94bee468101a85bf85460b7384b9b3617
font_02_sfnt_off00011e47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E47 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1