Malicious PDF — malware analysis report

Static analysis result for SHA-256 46b4f00ce8d644bc…

MALICIOUS

PDF

121.2 KB Created: 2021-06-27 16:58:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2bbeffd0e69b09135c88757fd20ce494 SHA-1: e38feb68d15442cc1901efb9b27e0f06a30eb340 SHA-256: 46b4f00ce8d644bc3fa0cbe77611c2984cb6c7e675577186f43c2b3455ce63ad
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites and other domains, indicating a link farm designed to redirect users to potentially malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://ketchas.ru/uplcv?utm_term=the+cia+guide+to+clandestine+operations+pdf
    • http://alemotta.com/resources/original/file/fivazifizararedijudamere.pdf
    • http://alemotta.com/resources/original/file/jaletegino.pdf
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f7655a87e0---41218101958.pdf
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071124d3fced---mepafije.pdf
    • http://singlesync.com/userfiles/file/50716016800.pdf
    • https://asiquim.com/ckfinder/userfiles/files/xexudomedogor.pdf
    • https://daleplumbinginc.com/wp-content/plugins/super-forms/uploads/php/files/b5067120ee9b83de6da9bedf029be923/madolubulufi.pdf
    • http://shmountaineering.co.uk/wp-content/plugins/super-forms/uploads/php/files/f2j160ln5bkjsko87fm7g5pj25/kuzivigitowipawovubi.pdf
    • https://www.golddustdental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad23e57f425---46648566657.pdf
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3827690ee---doveku.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160940a1bb6b44---ligagoziz.pdf
    • https://www.straightmyteeth.eu/wp-content/plugins/super-forms/uploads/php/files/0e206b22b5382d4e7a5fdbf7ba6458c2/18228136646.pdf
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607321ccce308---87153897275.pdf
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a34b76c50fb---wineroradirakavig.pdf
    • https://jnfarley.com/wp-content/plugins/super-forms/uploads/php/files/ccu5ae7a8vtr5cfkhokhcnfmh0/junatajasusarodade.pdf
    • https://amrapalispot.com/userfiles/file/melawenakipoduvopevub.pdf
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/11f739v2bo6e01t4eajb9mhe30/ponudufajilanujogaliwubix.pdf
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/mg4ubgv0q7fjtee4gto4n5rohb/68849847258.pdf
    • http://grandchainfamilyfoundation.org/clients/85333/File/56623997884.pdf
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/igr051mrom4m0osct6s2f945g7/salukupozagebelusok.pdf
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a4eeab57d5d---suginuguruxivasiwixapu.pdf
    • https://t2sc.me/userfiles/64657341161.pdf
    • http://a2itsolutions.com/chop/multimedia/userfiles/file/nuwuse.pdf
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607d249624236---megijekogomazekafo.pdf
    • http://suacona.com/clients/16856/File/94739616403.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_off00017915.bin
2edfc04300f29e8000a60db2f08588d6f2ca0d54477dbd59c45cfe9693de2128		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17915 10960 bytes
font_01_sfnt_off0001923d.bin
7f3d9ba9ef6f3d37756facd5455d4b78cd42cc8547942f7bbded099d87996400		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1923D 17064 bytes
font_02_sfnt_off0001be96.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1BE96 16792 bytes

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