Malicious PDF — malware analysis report

Static analysis result for SHA-256 01902a2df295656b…

MALICIOUS

PDF

86.9 KB Created: 2021-06-27 14:31:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: bd892d865c282ce4e0b7a7afd1fd1e28 SHA-1: 5f20f7d05d503330ed44753c9f38ad38999aff3b SHA-256: 01902a2df295656b6643959596942d683e0f96c8370c31dd6bb97262d6de284e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1553.005 Security Software Installation

This PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document body contains instructions to disable security software, a high-risk indicator. The numerous embedded URLs, many pointing to compromised CMS uploads or disposable hosting, suggest a link farm designed to redirect users to malicious content, likely a second-stage payload. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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://laborke.ru/uplcv?utm_term=download+gta+4+highly+compressed+500mb+rar+for+pc PDF link annotation
    • http://murphysbeads.com/clients/54316/File/xaruwuwusofulasejo.pdfIn PDF document text
    • http://ttccid.com/userfiles/files/gemifemiwalunawikelipes.pdfIn PDF document text
    • http://hotstamping.pl/files/file/sasewuz.pdfIn PDF document text
    • http://purofirstli.com/userfiles/files/14504846184.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b231a15c098.pdfIn PDF document text
    • https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/dba5e1487caa181f7f30a2f8345697d6/tidakaruduxejonotuzef.pdfIn PDF document text
    • http://soles2walk.cz/data/file/40730525241.pdfIn PDF document text
    • http://dolphinegypt.net/userfiles/file/wimowikisom.pdfIn PDF document text
    • https://estigotours.com/wp-content/plugins/super-forms/uploads/php/files/bc48a0d855b31a95857d173edb101838/50573419109.pdfIn PDF document text
    • http://naturallabs.fr/userfiles/file/wasuvelisunuj.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c7250da300---59060498943.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607f5384d3f1c---pelarelexaved.pdfIn PDF document text
    • https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/310f6af88f6e112a17406a6d2996eecf/ponedudawaxedadi.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/6498b06449314f5f5644cdcc61d4ece5/jilusapanivexaj.pdfIn PDF document text
    • https://cristalparkhotel.com/ckfinder/userfiles/files/juwufekusefonozusetotarov.pdfIn PDF document text
    • http://fincasotilloviejo.es/files/sotillo/_repo/file/dagaxuvexalazuparofiza.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080d5851a599---95488554566.pdfIn PDF document text
    • http://hibertek.com/image/files/20210618_122505.pdfIn PDF document text
    • http://adance0112.com/upfile/editor/file/genorox.pdfIn PDF document text
    • http://www.aadhar-interior.com/userfiles/file/turukod.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bcac3c8dc3c---46921053831.pdfIn PDF document text
    • https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/eebaa6ee3478a4e71e96cd859bc97c68/50876895264.pdfIn PDF document text
    • http://agcslohian.com/userfiles/file/nopepopijen.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_off0000e9ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9BA 17696 bytes
SHA-256: 6953c7140cfcd43609453155bc6697c96b99a8527db95d01f84a91c586858e1b
font_01_sfnt_off00011894.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11894 11740 bytes
SHA-256: d281020ea7d9a1a44034dc99405d17fc534eb3337d249d175271b52d7b214129
font_02_sfnt_off00013420.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13420 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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