Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fc819d8ff463026…

MALICIOUS

PDF

70.9 KB Created: 2020-12-27 23:54:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75aa86d62755a3d04b55ae3b5917b278 SHA-1: 19501213a3579e8739b12bf188114f421f3280d7 SHA-256: 7fc819d8ff463026758fe84bb56b2e864aad6308315fa3fe9fda1dee835805ff
96 Risk Score

Malware Insights

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

The file is a PDF that contains an embedded URL pointing to a suspicious domain, likely intended to deliver a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though partially corrupted, references 'Mortal Kombat' and 'apk', suggesting a lure to download a fake game file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffnew.ru/strik?utm_term=mortal+kombat+the+ultimate+fighting+game+apk
    • https://womafikuv.weebly.com/uploads/1/3/4/6/134668976/8efe93eab.pdf
    • https://xasananixekoweg.weebly.com/uploads/1/3/4/4/134442195/4203103.pdf
    • https://cdn.sqhk.co/jawubibegeba/hhwQgcY/zomujidixogipitulem.pdf
    • https://kulufitobapesad.weebly.com/uploads/1/3/4/4/134443603/lusekoref_vomixefab_xumalid_pofer.pdf
    • https://cdn.sqhk.co/kufusivekogo/e0haCMK/super_jungle_adventure_jungle_world_2019.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/fajujiju/58050037469.pdf
    • https://uploads.strikinglycdn.com/files/b1f5e27d-605c-47e1-af52-bc93532900ba/call_of_duty_3_zombies_online.pdf
    • https://s3.amazonaws.com/vipuxafol/draw_sheet_plastic_90_x_180cm.pdf
    • https://uploads.strikinglycdn.com/files/a8b301bc-c0d9-45e8-86b7-29d4e996217d/59433863421.pdf
    • https://s3.amazonaws.com/jivagajamav/negative_thoughts_trigger_negative_feelings.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_off0000d609.bin
b1f5d720bc08067b21bfbbfaf9ff235f07801b701eb56eebfe450761c7e924ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD609 5348 bytes
font_01_sfnt_off0000e821.bin
10c7b6cbc742d16555fd34be074febd5cb423aaa1a96f556f024d4db008117fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE821 11508 bytes

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