Malicious PDF — malware analysis report

Static analysis result for SHA-256 85c601eb261109c4…

MALICIOUS

PDF

86.4 KB Created: 2021-06-26 08:16:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 6e3b5023e54bd0548b9c847a5e0c060d SHA-1: a89acac09455c387a870d2413235360d940bf1f4 SHA-256: 85c601eb261109c4377b9b4291fbcb6282db7d9ccfae8bfa9b51607fb9f69251
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and ML classifiers indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution scheme. Although no scripts were extracted, the embedded URLs and the nature of the heuristics strongly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://accuratesearch.com/userfiles/file/fejudonavikawoxutu.pdf In PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/b3mu9bslgioh9beieq47bksktq/kewefojexe.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/4c4b3dece58870f72df5ddee36fc1fc8/muzaboworukofejulemav.pdfIn PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-4-30/20210430141306983286.pdfIn PDF document text
    • http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077ba48d9e7f---51719817827.pdfIn PDF document text
    • http://servmed.net/userfiles/file/ximakimasufuji.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160720a7c0c157---kisokabozuxaxedo.pdfIn PDF document text
    • http://ezibra.pl/upload//file/xafanebuvelujabutuvoteli.pdfIn PDF document text
    • http://yilip.net/userData/board/file/45688506166.pdfIn PDF document text
    • http://targhevaticane.it/userfiles/files/43040661589.pdfIn PDF document text
    • https://www.medicalart.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160721fe084687---64342712883.pdfIn PDF document text
    • https://zemiigori.com/uploads/file/89011652590.pdfIn PDF document text
    • http://absolutelyneon.com/userfiles/file/gagebibazoxalozoko.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607d526ac314b---xeturox.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/fb7cf70ceefedb175870309522f4bed4/10834862343.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/gisididolekizekiwudozo.pdfIn PDF document text
    • http://rymwid-training.com/userfiles/file/bepofutewafegijanixivojem.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/edb18842bcc51d7d3cdf02392b4521f7/zupepuwuvom.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/o023ucju3tf18vrl1d083kc4m5/rewibirumeritawek.pdfIn PDF document text
    • http://designpavelzapletal.cz/files/file/48461618892.pdfIn PDF document text
    • http://shinies.ru/img/lib/file/98184995510.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c3db8c77eba---deforegan.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=gloucester+social+servicesPDF 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_off0000ec4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC4C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10463 10324 bytes
SHA-256: 0b672911c46a8fa71f8f1d2a29429e74a2f6285813a6f895f1061ca357f72696
font_02_sfnt_off00011be2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BE2 17912 bytes
SHA-256: 579eb98c32497434adf322b2c6cac5fbadff170eead8468f39841d225f5a0bc2

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