Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a6f04bb68311835…

MALICIOUS

PDF

69.9 KB Created: 2021-05-16 19:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e77ef5d800ec01756def84d831b32af SHA-1: 9809f393be05156f4fa4605f9a8f700347146393 SHA-256: 0a6f04bb68311835b640bf5152136b082df492de18b58d21c4eb80dc3688f95e
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains multiple embedded URLs, suggesting an attempt to redirect the user to malicious content. Although no scripts were explicitly extracted, the PDF structure and heuristic firings indicate it is designed to exploit users through deceptive content and links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/16071d322b599d---98240112945.pdf
    • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091f13db7da9---pilagodogefoxivedunov.pdf
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/6aruddn1qvev237bfk3446jfi2/fuvejuf.pdf
    • https://alutat.com/data/file/telak.pdf
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/1tp80tkqev3erogqhnvombq9l2/1255625261.pdf
    • https://www.histoiresdegroupes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f8b208c1ed---bazivogev.pdf
    • https://murderescape.com/wp-content/plugins/super-forms/uploads/php/files/875e8d101908bc949338bc5896dd96cc/vavepunes.pdf
    • https://ivfnna.gr/wp-content/plugins/super-forms/uploads/php/files/036f169a104a8a621d99b04201a03ca0/rifijo.pdf
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160903af398079---memexenazefo.pdf
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/9e0ce0778c0697d04002b26de0b973cd/81941846973.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9090507b8---91303450719.pdf
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/a20d622d3acaa467ac0245d759115474/nexiruwodinog.pdf
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/16099e8be024f0---moxabivoberot.pdf
    • http://broadviewlibrary.org/uploaded_bvlib/file/kutixakogifuj.pdf
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/e10b2f02a4a03595d943f83944b67f1c/13309736011.pdf
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/03632cebeba58a4d3af35a526ca941a0/womaziruna.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=aspiration+system+design+guide
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d98c.bin
134fafb29fb463d5df0146ddececc2eeac2c1eec33be6fd70fb24075f34372be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD98C 5340 bytes
font_01_sfnt_off0000eba6.bin
62ed65b1609a2ff67c902bc1c4f36f106bf3ef61e84132b7fb3c8e975dfd0329		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBA6 10488 bytes

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