Malicious PDF — malware analysis report

Static analysis result for SHA-256 84d2a2b5989b55d6…

MALICIOUS

PDF

67.7 KB Created: 2021-03-18 20:01:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da02611ab039ecaa4fd128063dd542a0 SHA-1: 74276a9511af8bf79618a81787eeac497a74705b SHA-256: 84d2a2b5989b55d6160cf16448f0aa424b0098f0d9a354893094db6b339e4a9f
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, with a high risk score. It contains embedded URLs pointing to suspicious domains, suggesting it's designed to redirect users to malicious websites. The document body, though heavily obfuscated, combined with the PDF_URI heuristic, indicates an attempt to masquerade as a legitimate document to facilitate phishing or malware delivery.

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://golowaki.ru/wix?keyword=dork+diaries+11+pdf
    • https://puwoposujol.weebly.com/uploads/1/3/0/9/130969317/fofifetopimo_suwokulilokizo_favosoveb_vuwabu.pdf
    • https://cdn.sqhk.co/gaxobenona/jc06bgg/jotanenek.pdf
    • http://mujabelor.mywebcommunity.org/death_note_live_action_reviews.pdf
    • http://100naturals.fun/301942778816scse.pdf
    • http://rowowesofazov.medianewsonline.com/zofuluzigasoku.pdf
    • http://mutujejeturuduf.medianewsonline.com/zuzidepuzu.pdf
    • https://cdn.sqhk.co/muvotugi/9gfVIjf/best_slayer_master_osrs_for_points.pdf
    • https://galojegada.weebly.com/uploads/1/3/4/3/134364802/zomefumawidoxal.pdf
    • https://cdn.sqhk.co/jadepibake/HPigqii/33865150864.pdf
    • http://toolsbestpricemicrometer.site/towuvowomazalpw7r1.pdf
    • http://xitnet.fun/proform_tour_de_france_clc_indoor_exercise_bike_with_1-year_ifit6nrek.pdf
    • http://look-hotel.com/maximum_ride_saving_the_world_and_other_extreme_sports_movief020v.pdf
    • https://xafukulirodut.weebly.com/uploads/1/3/1/3/131379356/mawinakaladuf-vosibizawivuk-xagakiba.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b447b0cd-07e6-49ab-957d-60ce11f5c31b/85282564782.pdf
    • https://uploads.strikinglycdn.com/files/e154364d-00f5-4b9b-af3e-8d70b532d85a/92004586585.pdf
    • https://uploads.strikinglycdn.com/files/b666b80d-33a8-4697-a5a6-11adb468ad3d/41581657929.pdf
    • http://visugog.myartsonline.com/sri_rudram_in_sanskrit.pdf
    • http://liraperuwuw.atwebpages.com/83654406829.pdf
    • https://uploads.strikinglycdn.com/files/adee6e9b-f761-4590-83eb-ccc3d3ed9efa/43830438732.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_off0000ca72.bin
591cc2a88bf7b1d637b5cb33f3de5dbf12f3901ff61625a598cb98292798b64c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCA72 5120 bytes
font_01_sfnt_off0000dbf8.bin
00a239b4f1a964ad543d4f5ef05593f452536bdd675cc6cb235a7db581719203
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBF8 10788 bytes