Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee91d30a63898d28…

MALICIOUS

PDF

66.5 KB Created: 2021-03-25 16:13:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45c5a531b7a5ae8165a058b00f88c5fd SHA-1: e773c044f8b159722bd30e127987302c6390855b SHA-256: ee91d30a63898d28119834bc9d675d469b2d6120f52d57f2a8356fef86f6b0af
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to educational content, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wix?keyword=motion+forces+and+energy+science+book+answers
    • https://static.s123-cdn-static.com/uploads/4482853/normal_5ffcbb929f75b.pdf
    • https://static.s123-cdn-static.com/uploads/4370263/normal_5fc5e6f83656c.pdf
    • https://cdn.sqhk.co/juvanejejuwo/A1jehfd/rumeso.pdf
    • https://static.s123-cdn-static.com/uploads/4489414/normal_5fdea10f9b2f2.pdf
    • https://cdn.sqhk.co/pakebisas/3gfhhA0/11245418526.pdf
    • https://cdn-cms.f-static.net/uploads/4456140/normal_602e280ac9c52.pdf
    • https://static.s123-cdn-static.com/uploads/4366034/normal_5ff9bf3b3c8bd.pdf
    • https://cdn.sqhk.co/reparepoki/fgRpCid/jirasafuwigirofo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5681084f-3cf7-4fc9-bbd2-454eb4940641/4480715847.pdf
    • https://uploads.strikinglycdn.com/files/64550342-05fe-4627-9c70-ae9685caf440/77285693912.pdf
    • https://uploads.strikinglycdn.com/files/f7c54729-bd48-4a05-9c06-73420a7c5426/how_do_i_use_my_rival_roaster_oven.pdf
    • https://uploads.strikinglycdn.com/files/b91eec9c-5df2-4ff0-b0b0-0922c64f7809/ohio_common_core_standards_math_8th_grade_3.pdf
    • https://uploads.strikinglycdn.com/files/ebdce7a6-f8a6-4246-981a-e196cb23c314/can_you_get_ecg_on_apple_watch_3.pdf
    • https://uploads.strikinglycdn.com/files/8ec09d1c-55f1-4343-a592-d4d63995b077/39098704968.pdf
    • https://uploads.strikinglycdn.com/files/c45f44e7-9147-44b3-970f-94b61599643d/10910736965.pdf
    • https://uploads.strikinglycdn.com/files/6ca8d688-b2d9-4072-b024-8697cc4cc42f/my_mitsubishi_ac_remote_is_not_working.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_off0000c6a9.bin
4046edfb56318e61fb03ec6752a33232077f80cca9308f4a0f144d4e9c4a7299
pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A9 5560 bytes
font_01_sfnt_off0000d9cd.bin
ef9319033c786d05de30f54c87d4c5123117269e9ad98a955b9f97633ecae415
pdf-font-stream PDF embedded font (sfnt) at offset 0xD9CD 10272 bytes