Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8c1ded3c13c4c9…

MALICIOUS

PDF

80.8 KB Created: 2021-09-16 05:31:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: abc6792e17bc1145b942bbed67884111 SHA-1: 7128561140c4d8b9d42a47022309abb3cedd9685 SHA-256: aa8c1ded3c13c4c9dedcaa1f3c5356eb9afb20400ad9f304c4725c8cb4b82cb6
154 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://inwebjor.ru/uplcv?utm_term=gunship+battle+mod+free+shopping PDF link annotation
    • http://cgpharma.in/cote_dor_import/admin/ckfinder/userfiles/files/bogobupuzet.pdfIn PDF document text
    • http://youngthisyear.com/ckfinder/userfiles/files/rexulupapanodib.pdfIn PDF document text
    • http://monikaknoblochova.com/userfiles/file/95871473338.pdfIn PDF document text
    • http://mavelikaradiocese.org/rapha/ckfinder/userfiles/files/tegid.pdfIn PDF document text
    • http://jumpinfit.it/userfiles/files/wotabawup.pdfIn PDF document text
    • https://suruburi.net/mm/file/20774061577.pdfIn PDF document text
    • http://highlevel.pl/userfiles/file/mugikuwamamozuxufonired.pdfIn PDF document text
    • https://activepymes.com/pub/file/fobujatuvazobo.pdfIn PDF document text
    • http://mlsconsulting.net/cms/files/File/49005048288.pdfIn PDF document text
    • http://kaizousha.com/js/upload/files/repirig.pdfIn PDF document text
    • http://cwpni.com/userData/ebizro_board/file/zitesagujabazeseluwo.pdfIn PDF document text
    • http://pulsarvn.com/media/ftp/file/nakejoririwagupodajuw.pdfIn PDF document text
    • http://hardiebase.com/uploads/assets/filefile/1140316734.pdfIn PDF document text
    • http://www.companyforte.com/imagenes/editor/file/16678875655.pdfIn PDF document text
    • https://bibonatura.hu/ckfinder/userfiles/files/22870634552.pdfIn PDF document text
    • https://www.tctnanotech.com/wp-content/plugins/super-forms/uploads/php/files/8200a98e92aeb8023c97fef52a5e9a8d/68551080297.pdfIn PDF document text
    • http://illinoislivestock.org/userfiles/file/numirusirinatisidavaga.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16141bb26c9994---83319989686.pdfIn PDF document text
    • http://ryanoomen.nl/uploadimages/files/7309651437.pdfIn PDF document text
    • http://apmnir.ro/fckfiles/file/wunusit.pdfIn PDF document text
    • http://dexgerm.com/data/file/userfiles/files/makizulidodokafa.pdfIn PDF document text
    • http://maquinandoysubastando.com/dleyes/admin/fotos/file/doxovomazotajazi.pdfIn PDF document text
    • http://archgeo-leszno.pl/uploads/userfiles/files/71388048477.pdfIn PDF document text
    • http://www.sloepverhuur-debiesbosch.nl/upload/files/sezizomixoveporig.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_off0000d28c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28C 11224 bytes
SHA-256: f12c11cbb5b4b51cb964154719d058556494911f465f8358105a001848d7a803
font_01_sfnt_off0000ec37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC37 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10449 19104 bytes
SHA-256: 34319cbd62512651e6cb3c90da2384526c183ea0c2dc1d142aa514090daf66ba