Malicious PDF — malware analysis report

Static analysis result for SHA-256 f54f882bbc7bd1ac…

MALICIOUS

PDF

86.5 KB Created: 2021-04-06 18:47:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1aa8361115de2b5ee2f90fdd8e9bffb4 SHA-1: 0160040119943267a152878e6294e9c67d82a99b SHA-256: f54f882bbc7bd1acd07bc70e842ede045d7d0d965e67154eaded050be279f547
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, suggests a lure related to a movie title to entice clicks on the embedded URL.

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://seumenha.ru/strik?utm_term=wing+chun+movie+2010
    • http://tiwimifozukimu.medianewsonline.com/27688004073.pdf
    • https://cdn.sqhk.co/kisereta/jgi5jfj/fanazumolipujakuzufokisu.pdf
    • http://lifelalulenomip.mygamesonline.org/wuvuzofajilijerogojageto.pdf
    • https://cdn.sqhk.co/padixemugex/3IjhChc/land_a_water_bottle_flip_every_time.pdf
    • http://kijorifoweb.22web.org/programming_fundamentals_coursera_answers.pdf
    • https://cdn.sqhk.co/bikegola/gcEvBid/soccer_manager_worlds_prize_money.pdf
    • http://redajavuwav.iblogger.org/cacciari_libri.pdf
    • http://jovalevuwalu.22web.org/uc_browser_folder_karna_hai.pdf
    • https://cdn.sqhk.co/nedabuke/p2zjapw/bts_funny_videos_free_download.pdf
    • http://femokotafi.66ghz.com/client_summary_template.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/towakog/fewewizowadidarirofa.pdf
    • http://xinovedef.rf.gd/39736317929.pdf
    • http://nonepajurela.rf.gd/bksb_english_test_answers.pdf
    • http://gabepan.epizy.com/bifukodukepugo.pdf
    • https://s3.amazonaws.com/wovigebi/tiradegafirugafifovenuzi.pdf
    • http://wesivili.epizy.com/60057115027.pdf
    • http://bajivuselome.epizy.com/78789218407.pdf
    • https://s3.amazonaws.com/tugumeb/bajrangi_bhaijaan_hd_video_song_pagalworld.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000103a5.bin
a72975a8b3e75528a88643f3445a6ff0ca2f5522c0db2e1f14e6737fc4880a5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103A5 5004 bytes
font_01_sfnt_off0001153a.bin
e176ddc74b759b0b1cd9358a17b0439bbea2c24e9bc3077e5c073a3930ca17c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1153A 5096 bytes
font_02_sfnt_off00012695.bin
91d03e887f2a1fd400307517e18b5d443d57e8945f2b6aa08f9ceedfa000c5fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12695 11176 bytes

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