Malicious PDF — malware analysis report

Static analysis result for SHA-256 726da4c3a0c4a4d6…

MALICIOUS

PDF

127.7 KB Created: 2021-08-17 07:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-11
MD5: a649db466ef1fafe33d9c7a6563fc855 SHA-1: 5e346e6ecdcd9c4bffce08d5f7c61e277f760ddd SHA-256: 726da4c3a0c4a4d6f393ab7f79e8764da36204c93e3cce140c4aff7b6c39f930
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://cmepta.com/clients/7/74/74ea2f63c40943e6497cbf70acaf7c81/File/rexegudap.pdf In PDF document text
    • http://lnianemarzenie.pl/userfiles/file/62808167111.pdfIn PDF document text
    • http://goldenagegroup.vip/userfiles/file/pekimazuwomidenuxe.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/58014bc80ec698016f04cc59c745435f/mozivifobolonogojom.pdfIn PDF document text
    • https://caribemed.com/userfiles/file/19312806244.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160868e2898a29---dutoxafaka.pdfPDF link annotation
    • https://velvetskin.pl/wp-content/plugins/super-forms/uploads/php/files/5df5df16a9ed99914dd13dfa9a17c7db/4845414771.pdfIn PDF document text
    • http://kibunajcc.com/ckfinder/userfiles/files/nugixujegonubazonela.pdfIn PDF document text
    • http://thinhhoanggia.vn/Images_upload/files/pixatikupofev.pdfIn PDF document text
    • https://nowackleverkusen.de/wp-content/plugins/formcraft/file-upload/server/content/files/160913094a2487---rarejapegodawasijebe.pdfIn PDF document text
    • https://lhorizon.ca/uploadHorizon/file/96965084893.pdfIn PDF document text
    • http://bahtiyardishekimi.com/fckfiles/file/tanuximamamopekogebasobil.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611a1b22783ea---48635279966.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a22eba12dd0---sorojepixugirebamigubaka.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/vqnp06gp2ha1dfdosunfta3o3u/kajulubuvipefibifop.pdfIn PDF document text
    • https://cspdental.com/wp-content/plugins/super-forms/uploads/php/files/00431955342197d122ccc120b273cbd2/lowikevu.pdfIn PDF document text
    • https://actor-conseil.com/files/file/lipasamikan.pdfIn PDF document text
    • http://paidionresearch.com/userfiles/files/15711273692.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/jolikodomuvakuxa.pdfIn PDF document text
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/39850754623.pdfIn PDF document text
    • https://phuketwebstudio.com/ckfinder/userfiles/files/93292085892.pdfIn PDF document text
    • http://mesotects.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa19545c793---pirobapuwepaf.pdfIn PDF document text
    • http://minuspk.ru/minuspk.ru/userfiles/file/2427023763.pdfIn PDF document text
    • https://atpl.aero/ckfinder/userfiles/files/golemeromud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=analyzing+a+poem+a+lady+worksheet+answersPDF 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 extracted file (font_00_sfnt_off000191d7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000191d7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000191d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x191D7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001a9e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9E9 17036 bytes
SHA-256: e6f038d3e8aa88142379808325085c704a749802ec5376dfbfcdb67d0355a6d6
font_02_sfnt_off0001d603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D603 11172 bytes
SHA-256: 8d2bbd86113851839ecfe88da1f271fa9ee68b1eeecd84ed2b3995ad5c16a9e3