Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee2ec455e6dfe7a7…

MALICIOUS

PDF

104.3 KB Created: 2021-06-29 00:18:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: ef420c2cc99bae1a8d5409459e7271ac SHA-1: d05e32a85ab02bd4208af47007a499b3ed549c21 SHA-256: ee2ec455e6dfe7a7ba1058caa860c97f8da482857fb2eac83ba252c7b55cfea5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous URLs, many pointing to compromised WordPress sites, suggesting it functions as a link farm designed to redirect users to malicious content. The presence of external URI heuristics and link farm indicators reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9790

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://huntic.ru/uplcv?utm_term=cochineal+bugs+red+dye PDF link annotation
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/143ac85fc1546bc0799fc6b609514996/sinaroduxenapamomonomez.pdfIn PDF document text
    • https://www.ideaklinikbakirkoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609246910c3c7---wufopekifopugigafeg.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/22738ad98e9087bd42995cbcc1b0ad4f/jasipofekepabosedexi.pdfIn PDF document text
    • https://inclinedigital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afaa0ee8275---selopeku.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/5638a46074838a7b655c95330dc3171e/44881911241.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afefeb40e76---duropimejasisakasasifajip.pdfIn PDF document text
    • http://deryalvincotokurtarma.com/userfiles/file/puvapusivokevisud.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/5f91c463ff099794593c8f7627caaa69/wikoterukabapesef.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/d9ebe48e04bbfdbcd9ecce10603e4c34/64204909433.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/8hhnt0sb40u6htf2lke74hjso9/31743033846.pdfIn PDF document text
    • http://spalovnachemolak.sk/userfiles/file/lesemumerunisowugatazil.pdfIn PDF document text
    • https://bamfieldrental.com/userfiles/file/lozaxexovakonugixutegusuf.pdfIn PDF document text
    • https://kodeac.com/wp-content/plugins/super-forms/uploads/php/files/1uvhb4u274ohs6q6o7iercf72g/81729798851.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/49c090e6428f3a11de6dbd8ea9effd47/50597789390.pdfIn PDF document text
    • http://wib24-admin.de/uploads/file/10836041209.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5cd41db7f---52971118115.pdfIn PDF document text
    • http://elitvorota.ru/f/file/74432817197.pdfIn PDF document text
    • https://ajwatravel.com/wheelmarine/userfiles/file/dazijujagibepoxes.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b765ac69f---vejiruxi.pdfIn PDF document text
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/a2c1c34f1ab915f015238a8ddd638000/galelukubojanafikave.pdfIn PDF document text
    • https://mayurherbal.com/userfiles/file/44166991756.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/81da61c6f28c300b67d666c1dc689b85/wuwivujuz.pdfIn PDF document text
    • http://sns.hu/_user/file/90187616423.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/8db3bfe34d6cfdc00aeba4ae0f76f867/gitakekozovulemurelide.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/85340324511.pdfIn PDF document text
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/64843d2a4443f27e37608bc80304fd48/gisatotumemetamibafinek.pdfIn PDF document text
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001302c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1302C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00014843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14843 10936 bytes
SHA-256: a7ce47e4a25e4643d405b113f1b1ebf22deb50ad3cf21254a89be964381246bf
font_02_sfnt_off00016151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16151 18600 bytes
SHA-256: b80959c6e6ce8a2fdf3610cf52eb3ffc953d430ea4c5cf03222dc108f2fc1b9b

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