Malicious PDF — malware analysis report

Static analysis result for SHA-256 bac6e3278c3a7023…

MALICIOUS

PDF

86.9 KB Created: 2021-05-07 15:49:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a96178d546d36e20c734cf7d25b30727 SHA-1: 7fed9895ad8f16fe3809f5bbf0068c2b4a9e0375 SHA-256: bac6e3278c3a7023087e659fc4630fa461be94529e127b5b77d6bc77dd390931
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, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains text related to search queries and PDF metadata, suggesting a lure to a malicious URL. The embedded URL `https://mezovuduw.ru/strik?utm_term=what+is+the+best+small+coffee+maker` is the primary indicator of this phishing attempt.

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://mezovuduw.ru/strik?utm_term=what+is+the+best+small+coffee+maker
    • http://budofibo.mygamesonline.org/temperamentos_transformados_pelo_esprito.pdf
    • https://cdn.sqhk.co/soxesemu/hijQqcc/24283228295.pdf
    • http://newipufisatag.scienceontheweb.net/woxaximutagavip.pdf
    • http://fiwupejebibogu.sportsontheweb.net/mapa_carril_bici_barcelona.pdf
    • http://evakuator-uga.ru/pelifa41k4u.pdf
    • http://idealslimitalia-oficial.site/kowodumudifadoxudunuj.pdf
    • https://cdn.sqhk.co/dosijowikul/dglhhja/zakoxalizisusumotidu.pdf
    • http://vabizosod.22web.org/58771363048.pdf
    • http://bibopasaxuvibu.mypressonline.com/55101970725.pdf
    • https://cdn.sqhk.co/girewobo/ZRMYnih/five_below_locations_near_me.pdf
    • http://nekazupafo.mygamesonline.org/81110013345.pdf
    • https://cdn.sqhk.co/xupodafib/OjemSfR/whisper_app_arrests.pdf
    • https://cdn.sqhk.co/jumifokujuje/jwhagjh/homeschooling_free_resources_uk.pdf
    • http://bimadepunepi.mypressonline.com/36788653703.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://8c77b9b7-c39b-43d6-9406-6086bd2c0f93.filesusr.com/ugd/ee6770_5b05a7f4d14e4b92b336a40807a0c219.pdf?index=true
    • http://dezologukow.rf.gd/teri_aankhon_ka_kajal_song_mp4.pdf
    • http://simanij.rf.gd/77226661036.pdf
    • https://493f174a-a540-412c-bacb-e5b7b26cbfcf.filesusr.com/ugd/95bb70_97523b3527d943379a1371ecb2943bcd.pdf?index=true
    • https://67dec473-0a9c-497c-80b1-62a4c84c5046.filesusr.com/ugd/0aab01_d25024401b154b07bf80695792613a3d.pdf?index=true
    • http://waminakukivexo.rf.gd/16343995582.pdf
    • http://silavijegam.epizy.com/22506715399.pdf
    • http://gitodake.myartsonline.com/adverbs_of_quantity.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_off00010a9d.bin
4337f860e837ae8eea55b3bb2867a5b1e53b87e1dd01fff37c2d49d06ddb6dfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A9D 5020 bytes
font_01_sfnt_off00011bb2.bin
3d8042d197c18b49f014d6c92fd03597c70433273e66edd6e1b48dcb97b8bbc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB2 10780 bytes
font_02_sfnt_off00013fd7.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13FD7 4324 bytes

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