Malicious PDF — malware analysis report

Static analysis result for SHA-256 14c9342f8916d75d…

MALICIOUS

PDF

96.4 KB Created: 2021-07-22 00:24:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 01cca42aafd2bc783b913dc143e6bf3c SHA-1: cd1aa8d741b127aa703c8cfb86fc41ff68ea3f4d SHA-256: 14c9342f8916d75de894b15dfed6f6590d5b9fd7838a04b77bcfe747b162846f
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The file contains numerous links pointing to compromised WordPress sites, suggesting it is part of a link farm designed to redirect users to malicious content. The presence of these links and the overall heuristic profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c28edf60229---28746072889.pdf In PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dae4c6ceef5---tonefonurezigilesubaroke.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160e5fdf914ea5---64879247954.pdfIn PDF document text
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/046eaf98d42d29801aecb1f2deb7c47a/direnaxefigulijojeneli.pdfIn PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/6b0ce1217278932d6c94d3da4adb6c5e/57302164523.pdfIn PDF document text
    • http://a-aqua.fr/ressource/site-image/files/71282539763.pdfIn PDF document text
    • http://ippon.lv/uploads/File/83644504765.pdfIn PDF document text
    • http://dianacb.cz/userfiles/file/senakijir.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/qjkdu9vbc0cgv58aaimo4eh1s4/62077171751.pdfIn PDF document text
    • http://manavpublicschool.org/manav/userfiles/file/jetifosora.pdfIn PDF document text
    • http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608898e19963a---52564347251.pdfIn PDF document text
    • http://parkwaywest1974.com/clients/861606/File/mosusofodosoragefunapa.pdfIn PDF document text
    • http://sevimticaret.net/userfiles/file/vewelotipizanujonefemiw.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/160744b15c9e38---bobovewudosipasuseguze.pdfIn PDF document text
    • http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/berabufabibavuvesodepalu.pdfIn PDF document text
    • http://ttccid.com/userfiles/files/3588963161.pdfIn PDF document text
    • http://www.sandzthabapanel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160d00395b7dca---26552671304.pdfIn PDF document text
    • http://www.vegagastro.pl/upload/file/fogovopal.pdfIn PDF document text
    • http://guanzhuli.com/userfiles/file/maverit.pdfIn PDF document text
    • http://beta-rc.com/upload/files/mimodajuperenoduga.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/ce0aa15be2d59d0468302b6efb55d52c/gukulutor.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091341cd9110---66351409534.pdfIn PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/95490959790.pdfIn PDF document text
    • http://myarrahnu.com/mo_images/files/44556836299.pdfIn PDF document text
    • http://ebrinteractive.com/userfiles/file/josamorojugidimifaxamakip.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=cost+of+refining+crude+oilPDF 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_off000114dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114DC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CF3 10620 bytes
SHA-256: 7b1920dcc7754e299fef689d423ada8a43ed54ae08ae56c6cba1d4abb5a19793
font_02_sfnt_off00014524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14524 17448 bytes
SHA-256: 9696eacf6e8f24bdaf518211320b794d258f1168e467fcd0497e85089c655e74

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