Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed9c7b5d2f36586f…

MALICIOUS

PDF

83.0 KB Created: 2021-04-07 21:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9aa1861de4880e8d3f4e0e4189015cec SHA-1: 867d3691ec05d358c879ffe22dda9c6438d78260 SHA-256: ed9c7b5d2f36586f78920a47538dede3ae704ee4e297252dd9b801aa06b18336
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to deliver a malicious payload or phish for credentials.

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 https://soxebez.ru/123?utm_term=et+misericordia+magnificat+bach+pdf
    • http://xoroketogejuxe.mywebcommunity.org/32991535991.pdf
    • http://perevozka.ru/what_to_put_in_a_time_capsule_for_school1jqcj.pdf
    • http://ririzobe.medianewsonline.com/morag.pdf
    • https://cdn-cms.f-static.net/uploads/4382790/normal_6011fbff957ce.pdf
    • http://naturka.space/is_the_sig_p238_worth_the_moneykefnu.pdf
    • https://cdn-cms.f-static.net/uploads/4470543/normal_5fd619ff6ed0b.pdf
    • http://trysalon.xyz/paditeguri3cx3a.pdf
    • https://cdn-cms.f-static.net/uploads/4378171/normal_605be841533df.pdf
    • https://static.s123-cdn-static.com/uploads/4372681/normal_5fc927dc7c672.pdf
    • https://static.s123-cdn-static.com/uploads/4413362/normal_5fcb423f54ab3.pdf
    • http://azules.ru/wordscapes_cheat_sheet_daily_puzzleybdpu.pdf
    • http://gutagige.sportsontheweb.net/section_24.1_the_study_of_light.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0e91d8c3-eea4-401e-a61c-55327cb80a48/boss_ve_20_manuale_italiano.pdf
    • https://uploads.strikinglycdn.com/files/0b3592e5-9e7c-454d-abe0-0d6d57528eb6/venta_humidifier_maintenance.pdf
    • https://uploads.strikinglycdn.com/files/8cf98639-a507-4836-8116-e9b95bc7e7da/firiburemugonidaxomurev.pdf
    • https://uploads.strikinglycdn.com/files/65775fb4-83ff-4e4a-8da4-847a4604fdf4/what_weight_is_aw_32_hydraulic_oil.pdf
    • https://uploads.strikinglycdn.com/files/833aacfc-7316-497a-88c9-8f008b95fb4d/funuvetibigofedakuwo.pdf
    • https://uploads.strikinglycdn.com/files/7b8af3ed-166b-46f8-8f32-8340f258fc1f/dsc_alarm_installation_manual.pdf
    • http://jisijuvod.myartsonline.com/tusazapipeluz.pdf
    • https://uploads.strikinglycdn.com/files/b2bd06af-9d9e-4ff9-90ed-669dd11c9563/41849183974.pdf
    • http://nejimafalun.onlinewebshop.net/89373621173.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001054d.bin
93981ff0d4b55507a4289075834b41d2ec7c8e10a2824723a95cc2eba704fc09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1054D 5632 bytes
font_01_sfnt_off00011848.bin
b0ae5b6707eb6935504c7ddcd65fd304a62f80ee0af472e154611626123f40f1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11848 11340 bytes

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