Malicious PDF — malware analysis report

Static analysis result for SHA-256 bceeaeb8e63bf75c…

MALICIOUS

PDF

92.5 KB Created: 2021-06-29 20:55:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 76e5bed059106f9eee78905f583483bd SHA-1: 39ceb606425e79459e326cce44d2ac227aba9ee0 SHA-256: bceeaeb8e63bf75cabafe11f3a993a443cce81a9e089df0149bf8063d4b973a7
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous external URIs pointing to compromised WordPress sites and disposable hosting, suggesting it is part of a link farm designed to redirect users to malicious content. The presence of external links indicates an attempt to lead the user away from the document, likely for phishing or to download further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://pixomot.ru/uplcv?utm_term=imagemagick+convert+pdf+to+png+resolution
    • https://mytopics.it/uploads/file/8218393564.pdf
    • https://morethancleaningservices.com/wp-content/plugins/super-forms/uploads/php/files/df86f1c01937ea9f9fc18ea17cdd6d5f/rusonuvup.pdf
    • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160becbcd59f61---82776016651.pdf
    • https://ailani.org/wp-content/plugins/super-forms/uploads/php/files/f6d4dab89531f30fa1007921cf9deb4f/lunimezofen.pdf
    • http://drapikowski.pl/uploaded/fck_files/file/xiwewedowomigikawuketonam.pdf
    • http://www.petersmetalstitching.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1608264b414497---nevamawerupogekapu.pdf
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/79b3d39b296a58b7bedb5a9f55dd71c7/pimevajazezozez.pdf
    • http://cy2hand.com/userfiles/21983664187.pdf
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160777131c85d9---15880047564.pdf
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5cf1075c6---96228273430.pdf
    • https://jollytime.ru/wp-content/plugins/super-forms/uploads/php/files/f226ed5b844a2f501190a62fb63845a3/34860230768.pdf
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608364e016583---64456391035.pdf
    • https://rockyshairsalon.com/wp-content/plugins/super-forms/uploads/php/files/gtp83ai2dhivhcd7jfcg5onoou/86651130842.pdf
    • http://79.170.40.182/boothtastic.com/wp-content/plugins/formcraft/file-upload/server/content/files/160987de70769e---guxofiwuruwumaditelibumoz.pdf
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/oibqhv01r0e4d4e2r2hk9jd0e1/20130708143.pdf
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/05c57eeb4ab980ed6908d344d20f595d/59708818669.pdf
    • http://firewheels.pe/userfiles/file/29015305012.pdf
    • https://tocgia247.com/wp-content/plugins/super-forms/uploads/php/files/g3p5mjl1j00jua7e8qt6f5thlc/97827639141.pdf
    • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607800ccf2f03---rofuzadojobipe.pdf
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b1aa14a38b6---bosuzelab.pdf
    • https://ltgtrends.com/wp-content/plugins/super-forms/uploads/php/files/b3e4ea7336275bc30744c4438a45c6d5/vufebarubidog.pdf
    • https://monacollection.ua/wp-content/plugins/super-forms/uploads/php/files/41fff8309d6c838cb6b4b9fcebb7a906/kuwenifo.pdf
    • http://xn--rssx31a7tec6p.com/upload/userfiles/files/20210628072802.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010285.bin
a0737a95342cfac4794c64423785ba2f0a24c3510baed7ed6402df0bc9fbd790		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10285 18060 bytes
font_01_sfnt_off000132a1.bin
dacbdb9cbc8f28443c7b7c37bdad2b7ac78a4352752659422f55cd4460ef27f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x132A1 11172 bytes
font_02_sfnt_off00014c96.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14C96 16792 bytes

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