Malicious PDF — malware analysis report

Static analysis result for SHA-256 96aa693b5bca0133…

MALICIOUS

PDF

86.9 KB Created: 2021-02-28 04:28:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c6e8755345da8d7bae41aad0b70678c SHA-1: 9f087b792ffd2f20b315f1062147fafc5b0e5ced SHA-256: 96aa693b5bca01339dc4053288bd8e594cf0628b3563c33ca85db06223d24124
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with heuristics indicating the presence of external URIs. The document body, though heavily obfuscated, contains a reference to "they both die at the end", suggesting a lure. The primary malicious URL, https://xezojetit.ru/aws, is likely used to deliver a second-stage payload.

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://xezojetit.ru/aws?utm_term=what+happens+at+the+end+of+they+both+die+at+the+end
    • https://cdn.sqhk.co/wesuwajil/MiaicTB/university_of_montana_missoula_tuition.pdf
    • http://zobotalemogi.sportsontheweb.net/65264843845.pdf
    • http://loduwij.scienceontheweb.net/16000348686.pdf
    • https://cdn.sqhk.co/gupidiroka/yqgjgjL/asteroid_tracker_live.pdf
    • http://luziniwanemek.sportsontheweb.net/is_the_anarchist_cookbook_illegal_in_the_uk.pdf
    • https://cdn.sqhk.co/xunijejozi/jgdXfB6/lajirosozigivikupiviso.pdf
    • http://fezibinuzot.iblogger.org/dunanajudixo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://merekum.rf.gd/50139832829.pdf
    • https://s3.amazonaws.com/fosalizuzu/interview_questions_to_ask_candidates_about_excel.pdf
    • https://s3.amazonaws.com/tikoweravisixu/ap_stylebook_legislative_titles.pdf
    • https://s3.amazonaws.com/nitidadufetenu/37987095251.pdf
    • https://s3.amazonaws.com/gorajikunobixi/55347544495.pdf
    • https://s3.amazonaws.com/somamere/chain_of_distribution.pdf
    • https://s3.amazonaws.com/mamibis/31905981678.pdf
    • https://s3.amazonaws.com/xovajukoxin/expanded_sheet_metal_home_depot.pdf
    • https://s3.amazonaws.com/dorulusof/receptionist_administrative_assistant_job_description_template.pdf
    • https://s3.amazonaws.com/fusopoxipo/zatiladejud.pdf
    • https://s3.amazonaws.com/suxiweke/how_to_use_battery_calibration_pro_apk.pdf
    • http://mubodadekutaxim.atwebpages.com/5178289053.pdf
    • https://s3.amazonaws.com/bidemewufa/rogokovomemuratu.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3d1.bin
ee1fd42cf86a182a14534254df1d2647c9e09d260cb978bf9959bc1bbdb46719		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D1 5044 bytes
font_01_sfnt_off00010504.bin
225884dd046d7ddaefa05316b1514be6d033d58621678f5bad0fe51472e52b77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10504 10812 bytes
font_02_sfnt_off00012a31.bin
ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A31 16092 bytes
font_03_sfnt_off00013ef9.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13EF9 4324 bytes

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