Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd05197fe2f4dd6f…

MALICIOUS

PDF

130.8 KB Created: 2021-06-28 23:16:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 154820298320d9ac1a37c21831b6d1a9 SHA-1: 9589ad19d32dcba1d313a3bcb3984db575458b00 SHA-256: cd05197fe2f4dd6ff6f7e2cdedbacc94ffe53d20684df8e70ec1ed2444d5e129
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. The presence of multiple external URLs, including one with a UTM parameter suggesting tracking, indicates a likely attempt to redirect the user to a malicious site. The heuristic for urgency lures further supports the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://krisoc.ru/uplcv?utm_term=hall+of+justice+dc+comics
    • http://resetimpianti.it/reset/public/file/541393834.pdf
    • http://akgikorea.com/file_upload/fck_upfile/file/vaparisebu.pdf
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/jobejizadipagogizoraja.pdf
    • https://celebicatering.com/upload/ckfinder/files/45189040598.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/a0204f2ff658bf89040f2a50c2ea0420/bobozamozeledavalirozup.pdf
    • http://shinies.ru/img/lib/file/81580323340.pdf
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/s8prgf9oq98fojaj8es43fp7v2/92829807879.pdf
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c936a32ba54---88191798516.pdf
    • https://etonbio.com/newsLetters/images/file/vudunudijopibo.pdf
    • https://couvreur-hautdoubs.fr/internet_new/images_et_fichiers//file/xadamib.pdf
    • http://banglatalkies.com/dynamic-images/cms/file/jofuvigulilem.pdf
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16088bf5f020ac---wolununamabogela.pdf
    • https://www.scilights.com/wp-content/plugins/super-forms/uploads/php/files/f913ac633eba2507e21ecbee5aa4ad2e/84756879317.pdf
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a90ff185b2---vezomezabuje.pdf
    • http://toyteepee.com/uploadfiles/file/210520051508485490x9bpb5.pdf
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bb8899a176---dazotejizum.pdf
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbe64775b27---5043400332.pdf
    • http://spy-military-labs.com/userfiles/file/nulonerenapojuk.pdf
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/r4ejj9e7jf8pfed4bamoek31ls/55209212320.pdf
    • http://pensacolahigh1964.com/clients/1/1d/1d652d7f5bd5fd2f3712913460b20393/File/64241672460.pdf
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608e17874aca5---29444741109.pdf
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2bfd49384a---56499251705.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_off00019ee8.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19EE8 16792 bytes
font_01_sfnt_off0001b6fa.bin
c08f92ff671a24ead02709bcb32e6bdedd47445162522deb6cdf9f96b3d2817a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B6FA 17640 bytes
font_02_sfnt_off0001e564.bin
71cda9b3a51def97ec768b49e2942dacf266ec56543ca9cd7e5459dbb63024cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E564 10656 bytes

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