Malicious PDF — malware analysis report

Static analysis result for SHA-256 af76f7211ece9aeb…

MALICIOUS

PDF

85.3 KB Created: 2021-06-26 00:38:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 9fa1de1a1d9571c991019a0d60bad430 SHA-1: 02d3d5c822506c83c48b254a11aa73e4410dc4af SHA-256: af76f7211ece9aebae302962c869bbec5b50a0399b7f5420c6a7c39888780688
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to various external websites, some of which are hosted on compromised WordPress installations. The presence of numerous links and the use of disposable hosting suggest an attempt to distribute malicious content or phish for information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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 http://slp70.com/clients/873855/File/lakasunivaledonatigo.pdf In PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a2302a379b9---67220293677.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/4a3fcbeb25e268da0554ca3f4585d4db/kamenoxevagexizageju.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160843e4ba95ba---80849076006.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae5c74f60a---vefasasedapegitip.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/mofuwomitogubipediz.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608702ffd74ea---kawusufebed.pdfIn PDF document text
    • http://kwartetproforma.com/userfiles/file/sidogipupije.pdfIn PDF document text
    • http://wib24-admin.de/uploads/file/maxedozarumewobobulozava.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160857bca499ce---jewegigo.pdfIn PDF document text
    • https://rimsball.com/ckfinder/userfiles/files/sozujeludotob.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9523a1ded6---pasagomapinugo.pdfIn PDF document text
    • http://cesurmakina.com/userfiles/file/84843213884.pdfIn PDF document text
    • https://coevent.ru/upload/files/toredironuvigak.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2f9c75099---86006850572.pdfIn PDF document text
    • https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/g4l8f2481d116vruu73e69nvg2/gujuni.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/o60vuehqgnj53bnn9i6nakk7nl/53069374704.pdfIn PDF document text
    • http://awkontrakt.pl/ckfinder/userfiles/files/kuzefevitirudolibotebaleg.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dbce48dd2b---taziki.pdfIn PDF document text
    • http://datavincity.com/uploads/ckfinder/files/jemuzivoxeloxa.pdfIn PDF document text
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/9gk54p1guoaqlj08si1n558q42/56849277154.pdfIn PDF document text
    • https://istanbularicilikfestivali.com/upload/ckfinder/files/somepivisulasuw.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c63805944---zekezogevusinobafu.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/eb01d1c8270c67a681cd011f7a6d1077/72810929320.pdfIn PDF document text
    • http://redactron.com/userfiles/file/57241319152.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=complete+guide+for+mat+by+disha+experts+pdfPDF 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_off0000e91f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91F 17060 bytes
SHA-256: e78a60a65d7d62b8e17b1e17352d4a7310a4fdb9cbd8bfb534b7f7afb3855249
font_01_sfnt_off00011597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11597 11328 bytes
SHA-256: 4d694351ab9292dac18d36ed86b6af06c259b49a382f53efdb74b2088b2a201a
font_02_sfnt_off00012fd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FD9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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