Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed06e132734c747…

MALICIOUS

PDF

77.0 KB Created: 2021-03-25 01:18:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f514423a16314e695c696ab849f1565f SHA-1: 5369e924dfa33203f65fa670def2a82271ffee6f SHA-256: 7ed06e132734c74783d89ab9b41a61ac308dee59d948c0ad7fc5d5e702ccfa69
104 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 URI pointing to 'https://xezojetit.ru/wix?keyword=a+tale+dark+and+grimm+pdf+download', which is likely a lure for users to download further malicious content. The presence of a visual download button heuristic further supports the phishing lure attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/wix?keyword=a+tale+dark+and+grimm+pdf+download
    • http://latitekiwa.scienceontheweb.net/bukhari_shareef_arabic.pdf
    • http://vekisonoloze.sportsontheweb.net/financial_accounting_definition.pdf
    • https://static.s123-cdn-static.com/uploads/4455403/normal_6006a785984ce.pdf
    • http://xanusojuruxu.sportsontheweb.net/properties_of_bernoulli_distribution.pdf
    • http://setopin.mypressonline.com/network_cabling_standards_and_practices.pdf
    • https://cdn.sqhk.co/gopilufifeda/eNEpPih/cannon_shooting_story.pdf
    • https://cdn.sqhk.co/lokabawopup/Hgd6NU7/16408438427.pdf
    • https://cdn.sqhk.co/vunalogivefu/phaIogc/hi_tech_cooking_equipment.pdf
    • http://pidagenavuziw.mywebcommunity.org/list_of_english_adverbs_and_adjectives.pdf
    • https://cdn.sqhk.co/kuwusemob/ChJqhfz/maxeruzigijuk.pdf
    • https://cdn-cms.f-static.net/uploads/4476767/normal_6031cca506bcd.pdf
    • http://keniworu.mywebcommunity.org/29472663944.pdf
    • https://static.s123-cdn-static.com/uploads/4408862/normal_6000d69821004.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://441768bb-9839-4df4-8f78-dd1233b527f6.filesusr.com/ugd/7e6080_81fa9673f89f4b79862721ad0be1c464.pdf?index=true
    • http://pijosufun.myartsonline.com/multinomial_logistic_regression_spss.pdf
    • https://s3.amazonaws.com/vosimalume/formatting_code_css.pdf
    • https://0e67983c-e844-40c9-b604-97311ec94efe.filesusr.com/ugd/6e13d9_9eb70a80cc9c4348a80df5708dfb24ec.pdf?index=true
    • https://s3.amazonaws.com/rizezobabub/33771239526.pdf
    • https://s3.amazonaws.com/wetevali/love_island_game_twitter_bingo_answers.pdf
    • https://c6de0af5-2a4c-46da-924c-839bccb102c6.filesusr.com/ugd/5f1f0f_ff1b09ab457544378655f6c5f845d6a1.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d807.bin
a3179b05dc48e4e99afa8cbee9d2afafad89cede192cb3aab597e81023e2fd41		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD807 5328 bytes
font_01_sfnt_off0000ea25.bin
a70b815cdea11db00cc09007099547c6dc78cefade88d4ead23ce7c84a52a2b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA25 11268 bytes
font_02_sfnt_off000110b3.bin
7f10b5217708b7aced76a9c7cd02a51188d2af7235ea23585d094f6560042d0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110B3 16248 bytes

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