Malicious PDF — malware analysis report

Static analysis result for SHA-256 bedcde13d3722e84…

MALICIOUS

PDF

71.7 KB Created: 2021-05-02 15:31:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d6d39e013449375bc32535d17aed954 SHA-1: e201340e577ad40bacc1ab05a0e6e842e42d8db5 SHA-256: bedcde13d3722e84e79cbaa069366a97010a0e5b8dd11e7b7535deeb45cf52d4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites, likely serving as a distribution point for phishing or further malware. The PDF structure and embedded links suggest an attempt to lure users to malicious content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7353

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 http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073b83da790e---85185393655.pdf
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16086ad54b2160---xofixajizibagilolugefil.pdf
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1607a260551637---nuvugixemekisoze.pdf
    • https://www.straightmyteeth.com/wp-content/plugins/super-forms/uploads/php/files/255451010601ada7680603bccb4066c1/vubowelukaximeja.pdf
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16088f9fa59852---2694588353.pdf
    • https://www.oneirishrover.com/wp-content/plugins/super-forms/uploads/php/files/710dba12603feed16ea32bcce641c7fc/50473092548.pdf
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606f09eb2ad9b---94345490535.pdf
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/0c76ee8a3c5e420a770fe422ead6d130/11777160847.pdf
    • https://rebel-guitars.com/wp-content/plugins/super-forms/uploads/php/files/4230bbfab8efdc21ace1bd8df050be15/desijarodejesidem.pdf
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/qer90p4if2762gbu5d9esvdfd3/mexuvimosotomix.pdf
    • https://boldvision.tv/wp-content/plugins/formcraft/file-upload/server/content/files/16083440f24629---bonowinateluxiruxekanef.pdf
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe6787bce7---94940686865.pdf
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/e34959b62639e17f9c46a2ae094f94f7/retomagupazanubutisa.pdf
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/7a99e9aeea5778a7569096206701a32c/25002415514.pdf
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855ba7cb7e6---12064418447.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=former+dateline+reporters

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