Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c1489d3be591d59…

MALICIOUS

PDF

116.3 KB Created: 2021-07-21 22:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 8644c2943552e837b13bee2f9ea88d29 SHA-1: 689e4f432a0841b37395461aa1836bf9c3a26f48 SHA-256: 2c1489d3be591d59f91cf9e6de9ea7b60bcbab32bb9513dc9ec3e9604048565e
156 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress sites, likely serving as a distribution point for further malicious content. The presence of numerous external URIs and the 'link farm' heuristic strongly suggest a phishing or redirection attempt.

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 http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7aed5dae98---98668300399.pdf In PDF document text
    • http://slp70.com/clients/873855/File/kezutebebizezinasa.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f91b79c1c8---ridulizatax.pdfIn PDF document text
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/qmh5ugsia133fu435simbfs6mb/tixipudadini.pdfIn PDF document text
    • https://ntc-container.com/upload/files/mosonex.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ddb529cabf---22420874021.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e78e65165fe---94536001758.pdfIn PDF document text
    • http://xpressup.com/userfiles/file/lulerojuzorifurorumirud.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160b73b091ed1b---bewixaxurekebevavopepagil.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c8d90329730---67261300130.pdfIn PDF document text
    • http://www.almansori-ye.com/almansorifiles/files/64282173086.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/15a1e345c96bf0573d810861d5f3edce/jusamepimobim.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/b30ae730fc0aebbbd2bf0541210b222f/38185246407.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b279c0bbae1---gimunemegiv.pdfIn PDF document text
    • http://cogersquest.com/clients/f/f6/f6194b381802d71b6842d6160e8859b1/File/duvulobakasod.pdfIn PDF document text
    • http://bafiti.com/sklep/userfiles/file/96222433929.pdfIn PDF document text
    • http://gdgom.com/upload/file/210628165727655876371uw7zpjewb.pdfIn PDF document text
    • http://jmestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/78486382939.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/50d14bdf41e090a82f6d89ba75b12347/rorexeguxunuzuwasusoke.pdfIn PDF document text
    • https://rittenhousesmiles.com/wp-content/plugins/super-forms/uploads/php/files/562426641ca6f7f7f39f45c21b8eaa2b/88604671201.pdfIn PDF document text
    • https://www.helmmsp.ca/wp-content/plugins/super-forms/uploads/php/files/8e91c73ba07c8c192c194d22785abe22/pokudusisumogokuzi.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021071814334097.pdfIn PDF document text
    • https://www.ideaklinikkadikoy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1bbacb732c---74553215544.pdfIn PDF document text
    • http://hyundai-baoloc.com/luutru/files/15538461420.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=coveted+in+a+sentencePDF 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://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_off0001624c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1624C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00017a5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A5E 18368 bytes
SHA-256: 3a49b6bfd29a29c6ae69633e5cb43f0687cebfe6fe596d9ea81591ac4574e16e
font_02_sfnt_off0001aa9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AA9E 10312 bytes
SHA-256: 44c1803ad5a2b76b6b86fd537b05906014cd526e55f5b75e44b7aafabfcf31ff

Open this report in the interactive analyzer, or submit your own file for analysis.