Malicious PDF — malware analysis report

Static analysis result for SHA-256 25c2abd34677f0bc…

MALICIOUS

PDF

319.5 KB Created: 2022-02-28 11:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-02
MD5: 9ce857cbbca5721a6c11216ab23f576c SHA-1: 18244f8944dc39213ddc8d072889a6af71acc47e SHA-256: 25c2abd34677f0bc1ba69b671d46c6cd5f33160c8d31a001ec863b60a73d448e
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that leads to a compromised WordPress upload storage, and another that acts as an SEO redirector for a 'free download' phishing lure. The document body explicitly mentions 'Brigandine grand edition for pc free download', reinforcing the phishing theme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to distributing malware disguised as software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8975

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • 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://loheb.co.za/XSRYdR1H?utm_term=brigandine+grand+edition+for+pc+free PDF link annotation
    • https://ostrichtours.com/ckfinder/userfiles/files/42500819759.pdfIn PDF document text
    • http://clanlogging.com/images/fck/file/13248945475.pdfIn PDF document text
    • http://karpatskiles.ru/store/files/37565312508.pdfIn PDF document text
    • http://overnachteninorvelte.nl/bestanden/files/71367215141.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621022d6e9146---68849313327.pdfIn PDF document text
    • http://insightonafrica.in/userfiles/file/97898776052.pdfIn PDF document text
    • http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16210da3d03f28---korofetejimobitugabim.pdfIn PDF document text
    • http://divorcefinance.nl/uploads/file/25496686385.pdfIn PDF document text
    • http://kayamedbursa.com/userfiles/file/62334750973.pdfIn PDF document text
    • https://averakazan.ru/kcfinder/upload/files/24458571986.pdfIn PDF document text
    • https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/4e4c318c381de0ac63229d349c8f486d/67746188017.pdfIn PDF document text
    • http://livestocksaltlicks.com/ckeditor/kcfinder/upload/files/morukuwejukuz.pdfIn PDF document text
    • http://soncongnghiepjotun.com/media/ftp/file/nopuzita.pdfIn PDF document text
    • https://intimtreningdebrecen.hu/frontend/ck/kcfinder/upload/files/zamuwesemorewow.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/162147b80c35c9---gozefajowopuwoz.pdfIn PDF document text
    • http://zarya-lugansk.com/userfiles/file/kefagugaruvaranoromapuri.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 extracted file (font_00_sfnt_off000491ee.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000491ee.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000491ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x491EE 10632 bytes
SHA-256: fea14bfaf30bb3791c52d6177abe9da6d85bca2874dc7477fdb1c6d8b25ebe6e
font_01_sfnt_off0004aa2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AA2E 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0004c149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C149 17612 bytes
SHA-256: 85c06d60814c31f5d194357e3093d898a10769202a3545312391c6e391eb2dfe