Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa88e8d2e4a08497…

MALICIOUS

PDF

75.5 KB Created: 2021-11-22 11:48:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: a2ec003267572afbcb1a9acdc9b367bb SHA-1: 641e5277bf8fb1422a9f926cd3e1bb8e006fba72 SHA-256: aa88e8d2e4a084975d253c6d134ea6021a860815dc96111782034c8d5940c056
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9901

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://fashioneducation.ru/userfiles/file/58633458586.pdf In PDF document text
    • http://herbwaterthailand.com/userfiles/files/pemarezelobu.pdfIn PDF document text
    • https://doublehair.center/upload/ckfinder/files/35836748243.pdfIn PDF document text
    • http://www.buildonhope.org/file/sumano.pdfIn PDF document text
    • http://2990592.ru/ckfinder/userfiles/files/15382852438.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614ce8c9a6473---69643677498.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/iflb4uuljk03nm1gcriv8l6tf6/pofewil.pdfIn PDF document text
    • https://shinaltd.ru/images/file/fasaxozobunemugiresaku.pdfIn PDF document text
    • https://www.tzounakos-insurance.gr/ckfinder/userfiles/files/radupomakutaberesefexav.pdfIn PDF document text
    • https://georeno.ca/userfiles/files/xokoxowum.pdfIn PDF document text
    • http://avesta-hmora.boj.se/uploads/userfiles/files/fapoxawilurarug.pdfIn PDF document text
    • http://7m-shop.com/userfiles/file/20261576413.pdfIn PDF document text
    • http://webspace.mysdam.net/images/newsletter/files/xusoteva.pdfIn PDF document text
    • http://sinproval.it/userfiles/files/52330575364.pdfIn PDF document text
    • https://office-agglo-larochelle.fr/userfiles/file/65553148152.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/16131d319e28b3---79427305129.pdfIn PDF document text
    • http://e68momo.com/shopadmin/upload/files/41283300496.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/mulimajutaxutunesaze.pdfIn PDF document text
    • http://www.elstar.ru/uploads/files/81743308069.pdfIn PDF document text
    • http://agrocare.hu/ckfinder/userfiles/files/87375475949.pdfIn PDF document text
    • http://webinaris.blog/ckfinder/userfiles/publics/files/tupijeret.pdfIn PDF document text
    • https://calienglish.com/ckfinder/images_store/files/27767760419.pdfIn PDF document text
    • http://blankheich.de/images/uploads/file/revaxulubugijokawadel.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1618a768c63552---gabufezajegeburewo.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/4d2832d4fdb398c7bba5cb5161b048ef/galulesofemiludowukeko.pdfIn PDF document text
    • https://tspinstruments.com/cache/fck_files/file/71754174334.pdfIn PDF document text
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/mobbs6ersciut4fecdn73hclbc/41536360904.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/2I9n2o-U8HI/uplcv?utm_term=dr+ismail+gynaecologistPDF link annotation
    • 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_off0000c295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC295 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off0000d939.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD939 10688 bytes
SHA-256: 74e7e6d17626b06e0ae48ab7608c219578d1e72a9bf9efff6722b7a0b8a2d6a5
font_02_sfnt_off0000f1bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1BC 17836 bytes
SHA-256: 7db2c7d8054ba1527477580d14f76f5781ea51b27e5ff310c8bec099ef57ab3f