Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa828e949123ad13…

MALICIOUS

PDF

80.1 KB Created: 2021-09-06 13:53:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 775be93b4be110abbb375833af214e09 SHA-1: 683cdd5aa0e2e102cd0976a38b9c773f10c30efe SHA-256: aa828e949123ad1353776966a63e08a2152072a725e110015ad8d80ab764b2ba
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 https://synerhu.ru/uplcv?utm_term=poetry+prompts+pdf PDF link annotation
    • https://nacionalequipamentos.com/ckeditor/uploads/files/99098178375.pdfIn PDF document text
    • http://tuvanthanhlapcongty.biz/upload/ck/files/63825266307.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/70ad98f2fa8aad4425197d4d0d0bae43/30680818604.pdfIn PDF document text
    • http://utpcomp.ru/uploads/files/pevofidojoboxaruvapijozo.pdfIn PDF document text
    • https://krygina40.ru/UserFiles/File/wefulejijiwurinezo.pdfIn PDF document text
    • http://mh-gartengestaltung.de/userfiles/file/73734776105.pdfIn PDF document text
    • https://albizy.com/ckfinder/userfiles/files/vaxudosi.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc469e820dc---gumawapusesoraxetuzenud.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c51c9e967be---gumovok.pdfIn PDF document text
    • https://fotobolfestmeny.hu/mvc/userfiles/file/jitad.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160e9289bf3218---lumejojelesiz.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/5505861087e1e4c2a95100a128f740bc/42333356793.pdfIn PDF document text
    • https://brakos.it/file/93759704222.pdfIn PDF document text
    • http://mprime.net/ckfinder/userfiles/files/44249811591.pdfIn PDF document text
    • http://medrea.ru/upload/files/82568452681.pdfIn PDF document text
    • https://agrolliance.ca/ckfinder/userfiles/files/datozizepibepegovuxapewa.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/43a4eb7f16c1f8e2119b04a5b5a248bf/60996927735.pdfIn PDF document text
    • http://congtrinhnhaviet.vn/upload/files/sejomorukogisonesika.pdfIn PDF document text
    • http://strahovka66.ru/userfiles/file/nuzujubej.pdfIn PDF document text
    • http://gensugroup.com/upload/files/wiluzufuwoladiko.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/4401c2e492939e2428c20cf23dde5ca5/63543633824.pdfIn PDF document text
    • http://www.sindafaz.com.br/admin/editor/ckfinder/userfiles/files/pufexonivu.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/ec92a1a06733f227ce94f9fe67eb8933/39616063030.pdfIn PDF document text
    • https://skinrepublic.vn/webroot/img/files/38808721168.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_off0000d3e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3E9 17964 bytes
SHA-256: 208249c8fa7e005f748bb351a33da680aafb86ad680c1b47fe993eb9e0bd072c
font_01_sfnt_off000102f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011b0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B0C 10368 bytes
SHA-256: b7cea2a4764295e18d3375ebd99d09332705a317d0b67d095f5fcc992ece837e