Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee349b50efa3d69c…

MALICIOUS

PDF

70.5 KB Created: 2021-05-03 21:47:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 91fe6967298c7aa24743c2808fc642a8 SHA-1: 567db3d7c4e35ed1af0e897b6830702e00446c88 SHA-256: ee349b50efa3d69ceb468f1ee665e085632c774783bdb4cf7434b4ea367d6522
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains a link farm pointing to compromised WordPress upload storage, suggesting an attempt to redirect users to malicious content or downloads. The presence of multiple URLs hosted on various domains, some of which are associated with compromised CMS uploads, indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://vegasoft.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1606f47c5a136d---zifuxagore.pdf In PDF document text
    • https://www.cfo-search.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090138e86ca3---tekinibifene.pdfIn PDF document text
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608af3bb96496---57371276456.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/k8nj54u1ppgstqi8b9cij3qg6j/16442658941.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/7bsggohgeklf3cfntbfpaccnjl/52521719768.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/481b852b84d8c8408385e03ce0864978/83103436502.pdfIn PDF document text
    • http://mijneigenlift.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607d175b7f402---xinumovoxasu.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/b6e2e5ceeaa462f207a1f09e7892a99f/babevatesisebikuba.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/bldhsdupalvc2h3kcc8mqrp9s5/nevoduxazesesu.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/e05534ddfe6ecfedc9f7d66e2afc4194/wemodubod.pdfIn PDF document text
    • https://ltanimalpark.com/wp-content/plugins/super-forms/uploads/php/files/3249c9c81a682e7871ad4414031291bf/xotimovokamesa.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/kg0r3m7mbfi4g4etompfvkegjm/42373313846.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/t4go6if1f2jv3cuv98h5561jb5/98260312972.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082e0cf8296e---66328285433.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/935d0e641b63ad7f74cdb2260e86c1cc/sunokewapodada.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/ba102d46c262a9ebc19dae0f5ee7174e/6122779578.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=mobogenie+pc+app+freePDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90B 5116 bytes
SHA-256: ea58af3455a257a205916a5ef5546875f0afbfe2f01fb6c83f4fad64865f1843
font_01_sfnt_off0000ea9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA9D 10128 bytes
SHA-256: 9818c63fd1dee8aa233e6ca7536e2ccc77ecb76dbccc7df7c74b08f9650b7b44

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