Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6fc49de6e2e4b42…

MALICIOUS

PDF

78.8 KB Created: 2021-04-01 23:56:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c81606e2e185e797f6a7e107d786c1d SHA-1: 2e6c7f8d757bc5a7b208a5830c926a5ddb9df95a SHA-256: e6fc49de6e2e4b424ce199a49d85a10d15760b902b3e74e1256c8096bbb28bc7
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 an embedded URI pointing to 'ponafet.ru', which is likely a malicious domain used to host further stages of the attack. The document body, though heavily obfuscated, contains references to 'wkhtmltopdf' and 'Qt', suggesting it was generated by a tool rather than being a legitimate document. The presence of external URIs indicates an attempt to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://ponafet.ru/123?utm_term=arduino+ide+for+ubuntu+16.+04
    • http://picply.ru/75280921649pjbkj.pdf
    • http://study-english-05.site/shiitake_mushroom_nutritional_informationit54c.pdf
    • http://trokot-tonirovka.online/811991891057gyp7.pdf
    • https://jukegiger.weebly.com/uploads/1/3/4/6/134668336/abb255c31.pdf
    • http://findfreegirl.com/tri_fold_brochure_templates_for_photoshopabmv2.pdf
    • http://epipog.com/various_types_of_influence_tactics_found_in_organizational_settingse6ieu.pdf
    • http://chambrehq.xyz/xujiwumerutozgx6kp.pdf
    • http://erse.xyz/36030362798ah092.pdf
    • http://wersita.fun/alanine_transaminase_alt_aspartate_transaminase_astq8cd4.pdf
    • http://hookup666.site/bissell_power_steamer_power_brush_directionso00h0.pdf
    • http://podarokinsta.online/principios_fundamentales_de_la_economia_circularu30xn.pdf
    • https://gorasamigizutod.weebly.com/uploads/1/3/4/6/134600185/e15f7ed079.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/4bdae678-06a9-4d52-b925-588d81e69f83/73569685948.pdf
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_1fc19639f5a74d2e800838a561777c9b.pdf?index=true
    • https://uploads.strikinglycdn.com/files/7426eca2-b042-4ffd-bd4d-d99d42cdb535/how_to_fix_ernie_ball_vp_jr.pdf
    • https://uploads.strikinglycdn.com/files/4ae22aff-522c-4a01-9c90-3201e3a7d02f/61095893608.pdf
    • https://07d68bf2-0661-47e2-9ffe-eae068a071af.filesusr.com/ugd/fef806_9906b28cd3e443a0bfb5e9a27c9509c2.pdf?index=true
    • https://486bfeb6-87d8-40a3-812f-3449909c9139.filesusr.com/ugd/81b904_0c33a66baeed43ebae42c4685470ea50.pdf?index=true
    • https://883cd1dc-02d0-4059-8fa2-99201f92b631.filesusr.com/ugd/6166c9_4f186c84d39f41e3972df4c78b3d4455.pdf?index=true
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f503.bin
ab9c87f5d892901617305fb8b884ec70dc1b0e2914ee612f41d5bddc034d6107		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF503 5076 bytes
font_01_sfnt_off0001066b.bin
dc91ec8e32d235513a4d0c304d5cc5bd2f9f826a2810b465e57192c9ebd5cc9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1066B 11664 bytes

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