Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df27fd15141664c…

MALICIOUS

PDF

86.3 KB Created: 2021-06-26 11:28:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 55a27ef06a4f0591f342de8e150bde2e SHA-1: d7d03f71534e2563bf6cf3a4e6e2d0e5c2ac3add SHA-256: 0df27fd15141664ce0dc70f230a445ac6e98f4d6614543ddd1a3e7dd825cf3c6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It functions as a link farm, embedding numerous URLs that point to compromised WordPress sites and other disposable hosting. These links likely lead to further malicious content or phishing pages, aiming to trick users into revealing sensitive information or downloading additional malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://wastran.ru/uplcv?utm_term=i+would+like+to+take+this+opportunity+to+thank PDF link annotation
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/160ab8f9ed6d84---kuwanof.pdfIn PDF document text
    • http://paulsaperstein.com/userfiles/files/2354221930.pdfIn PDF document text
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2750d64b76---40435511206.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/53994769271.pdfIn PDF document text
    • https://luminex.pl/upload/file/diwis.pdfIn PDF document text
    • http://apnorajasthan.net/userfiles/file/80101068024.pdfIn PDF document text
    • https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/1581e4b3e66ee5e355b1e9e0faea72bb/13092732822.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/31863197414.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f1d4c3f27c---sapepatafusozevi.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607850ed435a3---78801816388.pdfIn PDF document text
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/48bb691ef64e6cb4c18dc98c12d52dc7/fugijobawupiwofilesutevu.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a678c4033ef---niwagerajevuwupolejomuzi.pdfIn PDF document text
    • http://coopmong.com/ckupload/files/55831173517.pdfIn PDF document text
    • https://www.marthatrotts.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607c2a3be65be---futowemuwajunewud.pdfIn PDF document text
    • http://stalmost.pl/userfiles/file/37820979858.pdfIn PDF document text
    • http://hb1004.com/userData/board/file/xivirabu.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/ea5570fd2994cdae67d2c0529984664b/93425879417.pdfIn PDF document text
    • http://edu-family72.ru/content/images/uploads/file/92060496714.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/fed6f3d88ac0165be6e6d751925fd7ad/sakusifumowasex.pdfIn PDF document text
    • https://functionalmovement.gr/wp-content/plugins/super-forms/uploads/php/files/894b971437a789e5023b5d27024b929b/70149757986.pdfIn PDF document text
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6643206ada---tujojopopuzofo.pdfIn PDF document text
    • http://indemo.pl/Image/files/degewuratiboxapawegizotuj.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607066ad142aa---13028733021.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_off0000ed1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED1C 10832 bytes
SHA-256: f6d36ed62b9a2612c444550a2b470c8720f50936088c03d7a9b454c253386ed3
font_01_sfnt_off00010621.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10621 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011e33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E33 18364 bytes
SHA-256: ebdc03ad390bc76321aef5138f2026ed06c08b5707f572e6aff9041ca8983985

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