Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ed6d200564c88e2…

MALICIOUS

PDF

70.0 KB Created: 2021-02-15 20:31:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 18ecae4b4c1caea9805d4b2dab0a3c74 SHA-1: 674c7dc9ed5c63a67068392e4e40022e5ae1e454 SHA-256: 6ed6d200564c88e2c82c22d10f8bc608e9fc31f3848e42f6a04263302c5c1e17
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, which is likely intended to host malicious content or redirect the user to a phishing site. The document body, though heavily obfuscated, appears to be related to educational material, suggesting a social engineering lure.

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://jottigo.ru/strik?utm_term=how+to+divide+decimals+by+large+whole+numbers PDF link annotation
    • https://cdn.sqhk.co/pavetikedur/d2ji4zc/formula_acceleration_physics.pdfIn PDF document text
    • https://cdn.sqhk.co/daxerarugak/H6jcJhh/27626687773.pdfIn PDF document text
    • http://xavelodezazil.iblogger.org/67692894196.pdfIn PDF document text
    • https://cdn.sqhk.co/xekowodu/ijhpRjb/60299913863.pdfIn PDF document text
    • http://pochta-24.cc/285116579824apf6.pdfIn PDF document text
    • http://jumazeg.iblogger.org/adjective_grammar_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://magikid.epizy.com/weight_training_guide_shoulders.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/multiplying_and_dividing_decimals_worksheet_and_answers.pdfIn PDF document text
    • http://jekoradamotud.epizy.com/49944633271.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/81557128720.pdfIn PDF document text
    • https://s3.amazonaws.com/kimone/zijozilerasezudupow.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/87665794132.pdfIn PDF document text
    • http://pasexojubil.epizy.com/django_template_ifequal_string.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/cartoon_love_couple_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/35616720016.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2DB 5708 bytes
SHA-256: 81d10a427d0bbad3b71a27069f3c370096edbd90392fadf536dd8230ccb10cfb
font_01_sfnt_off0000e62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62E 10732 bytes
SHA-256: 87d0b1bfa06c4c0617a1012b6d76eca3bc17bede13173142e6623f6e1e9c3dc4

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