Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ec241021b2f37ae…

MALICIOUS

PDF

72.7 KB Created: 2021-03-22 23:24:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d6fa86757f9284ba1478c6c1021f0410 SHA-1: dfd023861677c1307766deb714ad19df8affe645 SHA-256: 5ec241021b2f37ae383e5689cb6f80d84ef7a55ebc64039515d0e5f61143505b
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body, though heavily obfuscated, suggests it might be a lure related to game downloads or similar content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=tekken+android+apk+obb
    • http://murimubijejaba.mygamesonline.org/25522911627.pdf
    • http://bebetadiruj.mywebcommunity.org/encyclopedia_of_complexity_and_systems_science_download.pdf
    • http://giwitijudaleka.mygamesonline.org/analogy_practice_questions.pdf
    • https://static.s123-cdn-static.com/uploads/4428061/normal_5fcee666814ef.pdf
    • http://juzezudusota.mypressonline.com/32248546.pdf
    • http://lutirojibafap.sportsontheweb.net/pirates_of_the_caribbean_medley_sheet_music.pdf
    • https://static.s123-cdn-static.com/uploads/4494657/normal_5ffb7ee4bf06e.pdf
    • http://sowopezamiw.medianewsonline.com/suzobonedeguvowixabazum.pdf
    • https://static.s123-cdn-static.com/uploads/4486206/normal_5fc932e48225a.pdf
    • https://static.s123-cdn-static.com/uploads/4497093/normal_6003336a3039c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://abaaaae4-9231-44fc-b12c-ad55ebcc68e7.filesusr.com/ugd/2ca09c_bfccbc32b5d148299e21699724e9617e.pdf?index=true
    • http://kavezusi.onlinewebshop.net/tp-link_tl-wa850re_router_review.pdf
    • https://86a9da1b-0b57-4b35-a77a-523886b904cd.filesusr.com/ugd/0d9a50_867ef8fb1a224caa9e5112cee8f84d33.pdf?index=true
    • https://s3.amazonaws.com/mozedijiz/losatiwisopik.pdf
    • https://9a60fab3-6fb0-4be7-9305-b2e3cc44d963.filesusr.com/ugd/811c4f_230ed02d14874fd1a1567f1caccaad6c.pdf?index=true
    • https://6b5d12f1-3bbc-48af-9ddb-5430d2fe15e7.filesusr.com/ugd/3bf302_639d82c36ad7436a8ba9de22e6c500c4.pdf?index=true
    • https://s3.amazonaws.com/fovezewi/kundalini_yoga_teacher_training_manual.pdf
    • http://vuxebezedigelun.onlinewebshop.net/toto_washlet_s550e_best_price.pdf
    • https://s3.amazonaws.com/kalanejaxutilif/community_service_hours_timesheet.pdf
    • https://s3.amazonaws.com/bibejovixapis/xepovir.pdf
    • https://4328a374-8b5c-4134-9cef-e132ca5fc89d.filesusr.com/ugd/6732b1_9ddff8e60b4d4cc0b53e3e6ec7d08650.pdf?index=true
    • 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_off0000dd9f.bin
83e8fbb7786650689192e71fe70c3db65d7a3ab661380419fe01e8557a7bb55e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD9F 4896 bytes
font_01_sfnt_off0000ee50.bin
cce09b596119916443aa23fe69777a2b6bc941fe4d1e5ea3489cb3094b9a02ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE50 10984 bytes

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