Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf60e68f48851cf5…

MALICIOUS

PDF

96.9 KB Created: 2021-06-27 10:13:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c01ed00b5930306c4fe5b8add2d15878 SHA-1: a4d8fbcef063890d1b1e3072aadbeaf44f2d1663 SHA-256: cf60e68f48851cf5c28ab8fd822adb39439880c647ea0e4c58ed81c19683cef2
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm hosted on compromised WordPress sites and disposable domains, suggesting an attempt to distribute further malicious content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely instructs the user to open a password-protected archive, a common tactic to evade gateway scanning. While no scripts were directly extracted, the PDF structure and link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://fantasypartyentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f65919712---bawemazubid.pdf In PDF document text
    • https://roofmed.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b0b84818c6b---vusisosuxovomu.pdfIn PDF document text
    • http://qytbearing.com/upfile/file/belogemixamukixe.pdfIn PDF document text
    • https://maturana.cl/upload/file/42922621458.pdfIn PDF document text
    • http://archerelectricsupply.com/userfiles/file/62241567743.pdfIn PDF document text
    • https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/than8amp8a2csrhaq589hgk4m2/jaxogeviw.pdfIn PDF document text
    • https://stopserv.ru/files/file/vorazixubejowum.pdfIn PDF document text
    • http://el-master.ru/userfiles/file/vatowimofimoxusoruwot.pdfIn PDF document text
    • https://havanic.com/cache/fck_files/file/vabanatepuxut.pdfIn PDF document text
    • https://haps.company/wp-content/plugins/super-forms/uploads/php/files/jacpuvf5c63fgc8upbit60c2p4/74347956671.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbc677398b5---sejapasutu.pdfIn PDF document text
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/ku4i3v1ech6jd8hldcnbgad883/79660455423.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c861bc9cf23---jezisituru.pdfIn PDF document text
    • http://clasesholandes.com/userfiles/file/biwefafadoxejugujejuxir.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/haru1ilsc6osd1ml5rc88l4gu2/95935817396.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/sdfrf98ptp8scr0kcoa1i82830/33595098987.pdfIn PDF document text
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/f31279e06b0b7a541d8c67117897db1a/sulowivatofikoz.pdfIn PDF document text
    • http://adoriantarla.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c1018818a44---rixokavoxi.pdfIn PDF document text
    • http://euro-ex.com/3075828349.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ceffed98f3---bukevagiwojef.pdfIn PDF document text
    • http://jakpaisanestate.com/images/upload/files/57052499137.pdfIn PDF document text
    • http://klpa.net/userData/board/file/jobedikojugezazituxuxi.pdfIn PDF document text
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/gku2rv7o15e4h0h5l9vr9554u5/90254008657.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1606ced747cd58---ganibaxapugotarome.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=why+college+athletes+should+not+be+paid+articlesPDF 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_off000116f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116F1 11140 bytes
SHA-256: e5e95bc22cb4dccffd67fcbda503bd0a4427ea49666128b41308a9a0f4e7da54
font_01_sfnt_off00013084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13084 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14896 17672 bytes
SHA-256: 8dc5886e4e3237c196e5b65c04f24c97e361dc3cd05c8ddd8dfe3186d8b91857

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