Malicious PDF — malware analysis report

Static analysis result for SHA-256 432c9ece3222a70b…

MALICIOUS

PDF

79.0 KB Created: 2021-06-28 05:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: a311c5245154d4244729002bae0dfc18 SHA-1: ecbe886f75bccced22dbaabdca88a572554b9868 SHA-256: 432c9ece3222a70b22f278663c4f218dfcdac5c37c95e65121715dbab725b04f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's likely a phishing or malware distribution lure. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites and other disposable hosting. These links are designed to redirect users to malicious content, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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://archism.ru/uplcv?utm_term=the+voice+of+babaji+pdf
    • https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/e0e3b0588b0e2440de99f2c5747cce88/xoxaxasotemedegu.pdf
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d4d8deca01b---moloviropolinatofok.pdf
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a8963ca3f7e---wosobepanova.pdf
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a42213b1db---78126954891.pdf
    • http://say-international.eu/userfiles/file/nabik.pdf
    • https://alihuata.com/userfiles/file/48413094570.pdf
    • https://www.couleurs-et-jardin.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec52f417af---dumodesozetaxugijabe.pdf
    • http://karmand24.ir/basefile/ehotel724ir/files/nerekomeluvawox.pdf
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160befde929f3c---69108795948.pdf
    • https://alexandrapanayotou.com/web/images/static/file/zotazixedefotabil.pdf
    • https://maydangson.com/vietkiendo/upload/file/xatazavibu.pdf
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c1f62ea7be---57449784432.pdf
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c63464acf7c---69488032571.pdf
    • http://straub-online.ch/userfiles/files/misimonurawibet.pdf
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf3ef025ae---zetakulaj.pdf
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/03cce30ed60812b7173e1930ebeac211/zugakidoriwemado.pdf
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609608ebcf55b---rilaxozitoluvupilixupu.pdf
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c85df999db7---25253033661.pdf
    • https://karinbentum.nl/uploads/file/kasejadasuniva.pdf
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160a1794833d6b---ledajolatarexelazuwoxol.pdf
    • http://31kouqiang.com/userfiles/file/1624157564.pdf
    • http://onishi-kyosendo.jp/archive/lusiradan.pdf
    • http://harasim.cz/uploaded/files/jilatudaf.pdf
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/4ea86c73fb7df2f6a910d4135b1f2a07/kaximepij.pdf
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/160863a0b61a5f---lonuvakod.pdf
    • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/8660cef942c49612c63b5b38d93ba38b/goxumupudogusifek.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf1b.bin
d2eafef14f84b7427cfb2ba1de2594d72859ac506f6ac8d24586458fe104df4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCF1B 17536 bytes
font_01_sfnt_off0000fd87.bin
47f0ff64032bd44ef49c50e718fe164c6130635c49e114ea93a8876f0bda4180		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD87 10500 bytes
font_02_sfnt_off0001154a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1154A 16792 bytes

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