Malicious PDF — malware analysis report

Static analysis result for SHA-256 61192b1654fa891b…

MALICIOUS

PDF

87.4 KB Created: 2021-05-29 22:46:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 358827db7ab92579ae50102f189cce4f SHA-1: ca157fa3ce33cd1f510cb5854c3d97f611748c4d SHA-256: 61192b1654fa891b829d3f815e4b9f14e82498f58a42794621fffccb6b5b582f
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as a phishing trojan by ClamAV and flagged by an ML classifier. Heuristics indicate it is a callback phishing lure, prompting the user to call a phone number. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to lead the user to malicious content or initiate a fraudulent interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://canadanur.com/resimler/files/lobiranusemixupibof.pdf
    • http://s8radziejowice-paszkow.pl/userfiles/file/balewixeji.pdf
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/160797e261db4b---50748252917.pdf
    • http://arci-mp.fr/admin/File/kapuzinesagun.pdf
    • https://stewsites.com/wp-content/plugins/super-forms/uploads/php/files/6d9df99d137cd80595ca196e1935503d/setewenelukukimizakokej.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983b4cb8208---25174407644.pdf
    • http://myucmas.com/userfiles/file/kuguwo.pdf
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f3a3d95a1c---65513998038.pdf
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/81842a1268e2a20c3dc17bf34aab1636/nofiwodotuvimonemezo.pdf
    • https://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/1e3577d3470cfc6fc7493f9fb10ebd3a/davexidepopixe.pdf
    • http://blueyee.com/upload/file/201746189855.pdf
    • http://camonetinternational.com/files/file/94015952227.pdf
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1608816068a3c4---95833970180.pdf
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607613aea8493---17844405921.pdf
    • https://angelsstaff.com/uploads/file/viligaduwurigo.pdf
    • http://www.oschouston.com/osc/wp-content/plugins/formcraft/file-upload/server/content/files/1609ff0e8055a9---40830011059.pdf
    • https://www.advids.co/wp-content/plugins/formcraft/file-upload/server/content/files/160a45d02c2aca---28542873955.pdf
    • http://mikailang.net/userfiles/file/20210507021101_1260518854.pdf
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/7bc926ff814ed28c29a36391aad544d3/79596446577.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+make+coconut+shell+charcoal+powder
    • 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://scripts.sil.org/OFL
    • 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_off000104aa.bin
a983663bfb6dae49790b865a1eaa7d6cab25a4c21421763f708534027d7a183a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104AA 5428 bytes
font_01_sfnt_off00011700.bin
2391f13df0f22fbbd19267cc4cd6e9f0c401cf169979fd9ba01714c21fc26591		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11700 10508 bytes
font_02_sfnt_off00013ad4.bin
ebd2804bff382343e08f6a42dc45f69f4e794c08b23908ae60ba78ededae74b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13AD4 16164 bytes

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