Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2069059d484ab93…

MALICIOUS

PDF

77.8 KB Created: 2021-08-29 07:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 6bc03bfdbe4d56cf1bd2e25d6de61925 SHA-1: 0591d7678eba2d544ec93736ce24966ed93829de SHA-256: e2069059d484ab930a7f347892d78e9e8355b6dbe2046b62477c1081eafe325e
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, pointing to numerous compromised WordPress sites and disposable hosting domains, likely to distribute phishing content or further malware. The presence of external URIs and link farm patterns suggests an attempt to direct users to malicious sites, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://queure.ru/uplcv?utm_term=drivers+license+in+corinth+ms PDF link annotation
    • http://thedewakohchang.com/image/upload/File/unorarapajud.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f73b84d9c3---lisululesugesap.pdfIn PDF document text
    • https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/94b15b30e5d4f9ca16936182fa198e0d/ropipoje.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b417a45f58b---guwugoxufomed.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/3afd25a919237d302ac3640fa2118e8f/69077823579.pdfIn PDF document text
    • http://toyotarent.tw/FileData/ckfinder/files/20210717_C465876C0193C419.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/400058bbf0958199d0ccebeaf48c4c1e/96636984398.pdfIn PDF document text
    • http://oppedisanorobertosrl.com/userfiles/files/73236771070.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/files/11919137500.pdfIn PDF document text
    • http://savvyais.com/userfiles/file/9934507653.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16119040e68c6e---buponirubexojawakapure.pdfIn PDF document text
    • http://rspon.pl/images/wyswig_images/file/jogel.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfef1458a06---88917319760.pdfIn PDF document text
    • https://cleanenergy.mn/uploads/files/33619189812.pdfIn PDF document text
    • http://chinazzjx.com/d/files/tijasiroxofipulagavunosi.pdfIn PDF document text
    • http://compsult.net/userfiles/file/99952603670.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba84bcf0cc---55903538014.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/1bc63c01d3e428a0732854bd65018110/ridosalosibupip.pdfIn PDF document text
    • http://www.hydro-tg.pro/upload/file/jobiwefof.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/1inclhtck6abv55l4pc9ne2e5c/lidofuxisu.pdfIn PDF document text
    • http://longbeach.ilovepokebar.com/uploads/files/gekedamiropenewep.pdfIn PDF document text
    • http://www.ciesol.es/ckfinder/userfiles/files/tutejizifa.pdfIn PDF document text
    • http://tortsurprise.ru/upload/redactor/files/66963177345.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_off0000cae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE8 10400 bytes
SHA-256: de8765d3865647bed29f7f4829b49b9b3a9fd4a2551e35bd80b14648bf282daf
font_01_sfnt_off0000e240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE240 18000 bytes
SHA-256: 952ca0ef95ae30675ec2148b5282457fb0fde3ab23582c0ecc6dcc23f9f75320
font_02_sfnt_off0001106e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1106E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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