Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ada9f1d126cd134…

MALICIOUS

PDF

103.7 KB Created: 2021-03-24 19:59:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df96813d78bac4525014df5a4ddb2a3b SHA-1: 6a4eb615444276b7d6fbb0b72901755f3f02299e SHA-256: 6ada9f1d126cd1344db471a7301ec6f9766ebdcfd759041525771c20037239ae
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, and contains embedded URLs. One prominent URL, 'https://jacksth.ru/strik?utm_term=yamaha+mgp32x+manual+fran%25C3%25A7ais', suggests a lure related to a Yamaha manual, indicating a phishing or malware distribution attempt. The presence of multiple unknown URLs further supports this malicious intent.

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://jacksth.ru/strik?utm_term=yamaha+mgp32x+manual+fran%25C3%25A7ais
    • http://sozaxesugoj.mywebcommunity.org/57555637914.pdf
    • http://idealicait.website/hd_movie_site_listf38cm.pdf
    • https://cdn.sqhk.co/xafazunusa/p1jivUu/apple_sms_message_sounds.pdf
    • https://cdn.sqhk.co/letarezetap/BgfBgji/jidetur.pdf
    • http://evakuator-uga.ru/movie_free_tamiluko9v.pdf
    • https://cdn.sqhk.co/rujiwujik/jh2igKA/litajunajefi.pdf
    • https://static.s123-cdn-static.com/uploads/4381541/normal_5fdccc5b55f23.pdf
    • https://cdn-cms.f-static.net/uploads/4446034/normal_603f8657efa68.pdf
    • http://rewetuxavix.mypressonline.com/23644811345.pdf
    • https://cdn-cms.f-static.net/uploads/4482023/normal_602d4f71a38e0.pdf
    • http://pushbiz.fun/70918599566v5sjd.pdf
    • https://cdn.sqhk.co/keviwebewuta/jhgYYTJ/24074015852.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8df9d1b7-8f6e-49e1-bdac-c9da4d4291fd.filesusr.com/ugd/12c198_f194a48ebbd747a68a7a8ada2374e484.pdf?index=true
    • https://6131fb9f-3080-406c-a6ab-c4686b6a2f6f.filesusr.com/ugd/52be6f_1bc7a84effdb41fe9ff6e21403eb83e1.pdf?index=true
    • https://91313464-3f42-441e-b0e8-b27065d471ad.filesusr.com/ugd/ee9d3f_0554171610ce42ce975a184c7f432bcc.pdf?index=true
    • https://d4508431-0eee-4913-ac2a-2ec907ed9b18.filesusr.com/ugd/12daa7_d176b7cd3ff84ab7955cd5935b943613.pdf?index=true
    • https://14864a69-2465-45da-a912-c6f78a3f99b9.filesusr.com/ugd/409ca8_67593ff339fe4fa5879dfe72b51d9403.pdf?index=true
    • http://tobikinos.onlinewebshop.net/57470019002.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013c28.bin
e687f9fe7f0f8c9455afc7af8a6605db9c89c70e408930d4ea98ed12dc5b20d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x13C28 5820 bytes
font_01_sfnt_off00014fe4.bin
45089520a7a172d76dc780e5abcab59f6361aaa97fcadf96e5806a2364269f4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x14FE4 12416 bytes
font_02_sfnt_off000179cf.bin
24f4b12fa3c6db61703244677f1cf9939cf6462fb11ae4e1ecf6bb929b126f65
pdf-font-stream PDF embedded font (sfnt) at offset 0x179CF 16192 bytes