Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ad6cf00924f19d…

MALICIOUS

PDF

76.7 KB Created: 2021-04-06 16:29:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba1d9a2b936998f5712ef12a159559c1 SHA-1: c8eebe34d2ad2cb8581496a0defd51c3aac84b3d SHA-256: 84ad6cf00924f19d60fbcb6e3ec02e96cdee556b39d97c0e7d5e5c8db2e316a2
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for malicious purposes such as credential harvesting or malware distribution. The document body, though heavily obfuscated, suggests a lure related to a movie download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://botokaw.ru/123?utm_term=autopsy+movie++in+tamil
    • http://helpforteam.com/diary_of_a_wimpy_kid_double_down_full_book1cnop.pdf
    • https://cdn-cms.f-static.net/uploads/4403127/normal_60240f3a82093.pdf
    • http://vogudikomi.getenjoyment.net/factors_affecting_tardiness_of_students_in_the_philippines.pdf
    • http://kelimap.mywebcommunity.org/kawolon.pdf
    • http://interbank.link/auto_repair_invoice_fillable7g16t.pdf
    • http://mesikigodijope.mypressonline.com/technical_architect_resume.pdf
    • https://balixilime.weebly.com/uploads/1/3/1/3/131398392/38ec244208bf.pdf
    • https://lalojitewimagix.weebly.com/uploads/1/3/5/3/135304200/3538891.pdf
    • https://cdn.sqhk.co/tumowara/Sn1Toha/15596439848.pdf
    • https://cdn-cms.f-static.net/uploads/4416140/normal_601bc2196975f.pdf
    • https://bijejumutitin.weebly.com/uploads/1/3/1/4/131454352/1139006.pdf
    • https://gaxifuxizuru.weebly.com/uploads/1/3/0/7/130739475/liwuzidirosubil.pdf
    • http://xunarepozufuz.mygamesonline.org/puzana.pdf
    • https://static.s123-cdn-static.com/uploads/4412774/normal_600043b89530c.pdf
    • https://cdn.sqhk.co/sokulutesi/hdieKhe/jegizabovazovibumozupadok.pdf
    • https://cdn.sqhk.co/zolulesar/exBsigY/hakuoki_edo_blossoms_walkthrough_hijikata.pdf
    • https://static.s123-cdn-static.com/uploads/4476783/normal_6003a21161687.pdf
    • https://cdn.sqhk.co/vagekoxes/dMejhid/game_room_designs_ideas.pdf
    • https://tedaliduvif.weebly.com/uploads/1/3/5/9/135957254/75479f6.pdf
    • https://static.s123-cdn-static.com/uploads/4473062/normal_60098427ecd15.pdf
    • http://wonnaturila.space/antonyms_vocabulary2o0r5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://nunavaxukozu.onlinewebshop.net/blogging_for_dummies_6th_edition_free_download.pdf
    • https://b1d4f555-1eac-4d61-aa83-27206cf3ee4b.filesusr.com/ugd/1706f5_9161857a56e04a2d946c00f48e5e0779.pdf?index=true
    • https://60883313-e483-4213-bdf2-3844198a3b35.filesusr.com/ugd/3ba96b_a23cf95dbd034bb8a6d96cc2529f127e.pdf?index=true
    • https://5071cc05-3fa2-46b1-b944-d2523ca4b51d.filesusr.com/ugd/62e2c1_7fc63a8cea384de688bafe7592ba3ac7.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db6f.bin
466e223b034a8694c5417ebfef1e480c39f4e95d507215143b606a83cab23138		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB6F 5020 bytes
font_01_sfnt_off0000ec7e.bin
c74ec5ea7a7285bedd45ea6a58883db6e3d4687951c1f0926ac519ae85cd96c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7E 12220 bytes
font_02_sfnt_off00011637.bin
94e37be31ede57b1ed787b90b4d3b9c6152b81b4a9a7aba293487e062b427d4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11637 4076 bytes

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