Malicious PDF — malware analysis report

Static analysis result for SHA-256 87deb9267bd9519c…

MALICIOUS

PDF

62.5 KB Created: 2021-09-01 05:12:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: fdda803b9615f357a148d258a6f9c427 SHA-1: c7713b65de4e65279d6603cc71e06863bfadaea0 SHA-256: 87deb9267bd9519c4d69ff74b8760289684e98e91d673bb3e7d169e34eef68d9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farms indicates an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8891

Heuristics 5

  • 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
  • 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://synerhu.ru/uplcv?utm_term=if+the+airbags+deploy+is+the+car+totaled
    • http://m2mus.ca/clients/b/b1/b1ca46fdb12d68e762e4a8b3318caec0/File/5394640687.pdf
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082b805975d1---duladuzamasaxumovetosu.pdf
    • http://mikllc.mn/uploads/files/73673284515.pdf
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160707b8416010---paxolubin.pdf
    • https://curryleafharleysvillepa.com/hang/userfiles/files/fupejavewemiralokekafuxab.pdf
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/16082ec6dd405a---nulugevulinevepomupelo.pdf
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/ec858d9ffa7f05377ffea5f958cc7c4a/84014104336.pdf
    • http://magooferta.pl/uploads/fck/file/96965273206.pdf
    • https://rfcorporation.net/wp-content/plugins/super-forms/uploads/php/files/4def2b618f5481cd8dd729a7f41ec005/nuwitimonigube.pdf
    • https://www.themeshcowork.com/wp-content/plugins/super-forms/uploads/php/files/47eb3d8f8ee1b95ce98df331190b50e9/45247266733.pdf
    • http://brookhavenclassof1967.com/clients/0/0c/0ca802fc87877f8c548ddf85495caeb2/File/81704815164.pdf
    • http://keralabiblesociety.com/fck_uploads/file/36313885324.pdf
    • http://lamorenj.com/userfiles/files/fobununefujiluduve.pdf
    • http://aelma.com/sites/default/userfiles/file/73923748303.pdf
    • https://www.ppmcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/o9mbidq37j2dnd1fb7hqiujfj4/15898975501.pdf
    • http://kp-technik.cz/ckfinder/userfiles/files/10102895669.pdf
    • https://fibaquitaine.fr/cebatrama/userfiles/files/larefosupirazeki.pdf
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160986b571403f---bovudivuliwenov.pdf
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16090e5b82e45b---10380399005.pdf
    • http://fittbikese.hu/files/file/gomusikebilive.pdf
    • http://minhphucvietnam.com/uploads/userfiles/file/neworovulitawakuxapimub.pdf
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073b5251ecd3---42106975404.pdf
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0d731f1fa1---bofofe.pdf
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160bdffe7bed91---mubudodijitukiwuwupakume.pdf
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160919a1bb2304---14871690119.pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c7e2.bin
29c03f4f10f30293db7bed8d28fb30ea0da9428c368d4eb4315a9b1248d08f38		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC7E2 15916 bytes

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