Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5a074ecce684891…

MALICIOUS

PDF

74.1 KB Created: 2021-05-16 12:44:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb261c092a7aa390c292b9c611d84791 SHA-1: 0d4b7c0ed3b1497b45c6953f495c848754fe5db3 SHA-256: b5a074ecce684891e4669ab4788d3b7b61dbf7a78a145c83dd477887cb29eb82
96 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with ClamAV and ML classifiers flagging it as malicious. The document body, though partially corrupted, suggests a lure related to 'inverse functions practice worksheet answers'. The presence of embedded URLs indicates an attempt to redirect the user to potentially malicious sites for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/29670058910.pdf
    • https://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/3c3q488kaqa8dbh0md0eetn407/zamipuredebugisemin.pdf
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b26013d6d4---55849326656.pdf
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607f27e106e8e---bovejajaji.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/9760e78fd04edd9e4d9fa8889186cdc8/rakegaterogetovo.pdf
    • http://matsonconstruction.net/userfiles/file/putotibipevavu.pdf
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/72etir8prtb8fq69s1jm0nl2ll/fukodamobebolemavab.pdf
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/5jqe3f4l8qu775sh5f9g0gge1s/72991309181.pdf
    • https://hiampelectric.com/wp-content/plugins/super-forms/uploads/php/files/839a689ea998509297c879a8f9b3a525/xiwileranaropiwitito.pdf
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16075f7944083b---664971051.pdf
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f32a959c26---70387702685.pdf
    • http://xn--e1aaafipco3bk8gra3b.xn--p1ai/upload_picture/file/51363672389.pdf
    • https://www.finestkindcharter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608417a89478d---21768104653.pdf
    • http://t-p-fortune.com/userfiles/file/65666431939.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=inverse+functions+practice+worksheet+answers
    • 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3c2.bin
39fe12a83c5ddd07efb5972d1eeaf2d7dd190971ce9dc6684bca886622b3d8c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3C2 5104 bytes
font_01_sfnt_off0000e523.bin
7bcf2ba38328e23241770fabcdafd35b94f1ed703bb89505231c3c0d74916341		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE523 11012 bytes
font_02_sfnt_off00010aea.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10AEA 4324 bytes

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