Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7a96b18e615c008…

MALICIOUS

PDF

86.9 KB Created: 2021-06-26 09:13:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9997b073bdab8485164d999bab46e221 SHA-1: dcfc6ad51f994a6819d057ac6910217538a7b726 SHA-256: c7a96b18e615c008762d0112b7946ef6ffbbcd3d65a8e4b05b42af545b2228b5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting it's used to redirect users to malicious content or phishing pages. The presence of embedded JavaScript, though not directly analyzed for specific actions, is a common technique in malicious PDFs for executing payloads or initiating downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 https://inwebjor.ru/uplcv?utm_term=principles+of+teaching+vocabulary+ppt
    • https://ivanda-commerce.hr/userfiles/file/72494643192.pdf
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9eb1bf484---75176017485.pdf
    • http://photo-preiss.com/upload_files/files/xubilufexad.pdf
    • http://bosch-service-center.ru/uploads/files/nevakena.pdf
    • http://www.danvillern.com/wp-content/plugins/super-forms/uploads/php/files/o0mvcca0gm84q9it6iaaf7n480/38989493919.pdf
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/d026bbd5416bd98c1097c9d9f51f161e/bozugugifitizegag.pdf
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071abdcb1aef---94771563991.pdf
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/7aaf26ad0389b70257da67d4c20fe0ab/99696928444.pdf
    • http://ajk-opakowania.eu/upload/fck/file/nitotabanelikexoxoxegub.pdf
    • https://laser-arena.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160969d0c272f4---kiximetofeguzogetiduzi.pdf
    • https://thewentworthco.com/wp-content/plugins/super-forms/uploads/php/files/daec0ug2de7hcu65s7stgohmok/38118326488.pdf
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094671ca3d11---55282658128.pdf
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/50ad332cd94755e266b746362053f793/peverasu.pdf
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160826d27bb527---53263699863.pdf
    • http://shsclassof1959.com/clients/a/a7/a7a82b2a6025f7fafce5d77be70bf845/File/xupuvanipufukuvox.pdf
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/160c4ea9ed3986---87523400711.pdf
    • http://churchtextile.com/userfiles/file/xukosegijowa.pdf
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606e819e8dd7b---mujuvurufaxozawepusuj.pdf
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160aa7dd6be3f3---58636497222.pdf
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16070ff8410437---poxobobogolapevukexakos.pdf
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cac92a87dba---71965888733.pdf
    • http://zae.me/datafiles/file/kewojolarowaxizifosij.pdf
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160a0b3aa38e71---vipumaberawi.pdf
    • https://widepolymers.com/userfiles/file/sateboxewoxazugef.pdf
    • https://astek-telem.fr/userfiles/file/mopopuxa.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_off0000ee21.bin
369622db8ef1649f425a5d3c45575c796a6d774ffdf2cb8dc3a85c787be7bc20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE21 17308 bytes
font_01_sfnt_off00011a78.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A78 16792 bytes
font_02_sfnt_off0001328f.bin
5a89f72d90daf340a0de9d2534c773355a4b15d22bd6ddb7ef8ea6f1a5fa587c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1328F 11180 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.