Malicious PDF — malware analysis report

Static analysis result for SHA-256 79361b2ba42d7419…

MALICIOUS

PDF

88.1 KB Created: 2021-10-08 19:21:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 425ae070b2dc74c8fb6ff63734c2f7b2 SHA-1: 5de1b8f779a6d1e4df2ac4dcd18f1c5b25f9f2a7 SHA-256: 79361b2ba42d7419af67f1ca6231d4a61dac6778c0ada8a3330451ccc0a4bd9c
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://aroma-es.red/yamituki-n/uploads/files/7240834752.pdf In PDF document text
    • http://workontext.ru/media/file/77109503624.pdfIn PDF document text
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142f3789c980---finogivuribadu.pdfIn PDF document text
    • http://studiotecnicobonoli.com/userfiles/files/tatupekegisusuwirix.pdfIn PDF document text
    • http://phonphangschool.com/upload/files/90084318520.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/d3bfa7442c80fabd5e9a96385145b016/4148413413.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/83890476293f75ccfb8d9933623009d4/jimexabobanoxuwor.pdfIn PDF document text
    • http://ccshecea.org/upload/files/nolosagizabil.pdfIn PDF document text
    • https://ingatlansos.hu/images/userfiles/file/wufugatamidaresotinusofem.pdfIn PDF document text
    • http://xnucleus.com/members/member_images/files/fukaxibokis.pdfIn PDF document text
    • https://profipreklady.cz/www/ckfinder/userfiles/files/41200677492.pdfIn PDF document text
    • https://eventpro-kontraktorpameran.com/uploaded/files/14714758265.pdfIn PDF document text
    • https://daquin-ferriere.fr/userfiles/file/puminanitokan.pdfIn PDF document text
    • http://xn----1-6cdapb2bdyqawnpcindqfc.xn--p1ai/media/file/63906680544.pdfIn PDF document text
    • https://tw-itemaos.com/ckfinder/userfiles/files/rugofiloxu.pdfIn PDF document text
    • http://gancza.pl/userfiles/file/wifaz.pdfIn PDF document text
    • https://nhatngudongkinh.phapluatvietnam.com/upload/ckupload/files/budofalavixurinixolas.pdfIn PDF document text
    • https://bonaparte.cappencms.com/templates/files/14447442930.pdfIn PDF document text
    • https://rrrc.us/userfiles/file/jerowegaderijifile.pdfIn PDF document text
    • http://vagtteam.dk/userfiles/Files/dafenazabamagovanezo.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/59980546227.pdfIn PDF document text
    • http://cafecontinentalmd.com/uploads/files/nofifinigu.pdfIn PDF document text
    • http://bet-balance.com/userfiles/file/teleluwapevokojuvaja.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=ugc+net+paper+1+previous+year+question+paperPDF 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_off0000f066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF066 18992 bytes
SHA-256: 9d3cd0bc0be7c4cf6fc3d1744f5f750bee254e63e1a5ace0c0cbd885668a0f35
font_01_sfnt_off0001213c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1213C 10988 bytes
SHA-256: 2817148907198f119651f789d00641571f830fc43840a365a1fe393a4f615501
font_02_sfnt_off00013ab8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AB8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1