Malicious PDF — malware analysis report

Static analysis result for SHA-256 6162a17c908d0c05…

MALICIOUS

PDF

77.2 KB Created: 2021-02-14 10:53:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ac0fa6a63015cd8e4fe218ff70bc7fb SHA-1: 7e810006fac3d4504c97abf037056d65fa6cf136 SHA-256: 6162a17c908d0c05c459d8b6e7e38f1eab655c9019e911905079fe705e63e7ee
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF document contains heuristics indicating it is a callback phishing lure, specifically mentioning a driver's license renewal context. Multiple external URLs are embedded within the document, suggesting a potential download or redirection mechanism. The ML classifier and ClamAV detection strongly indicate malicious intent, likely involving exploitation for client execution.

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
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://jacksth.ru/wix?keyword=items+needed+to+renew+driver%2527s+license+in+illinois
    • http://faceit.su/49049510084c96dh.pdf
    • https://cdn.sqhk.co/daposofoxig/liagcSF/crash_of_cars_online_free.pdf
    • http://golesaluwo.66ghz.com/cartesian_coordinate_grid.pdf
    • http://noxivivixuza.22web.org/49305837014.pdf
    • http://sellforce.ru/performance_comparison_chart38f8e.pdf
    • http://bemixenorekuji.22web.org/area_circumference_of_a_circle_worksheet.pdf
    • http://idealica-italiaufficiale.site/69597449522qx3d7.pdf
    • https://cdn-cms.f-static.net/uploads/4379485/normal_6022f68e9b5c1.pdf
    • http://maxonona.22web.org/american_psychological_association_guidelines_for_undergraduate_education.pdf
    • https://cdn-cms.f-static.net/uploads/4481522/normal_601615b2ce97f.pdf
    • https://cdn-cms.f-static.net/uploads/4490133/normal_5fd9e86baa89c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://bopufadepop.epizy.com/12130670603.pdf
    • http://webidiwotew.epizy.com/android_adb_driver_windows_7_64_bit.pdf
    • http://derarav.rf.gd/bimazipogulebuvo.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_off0000e67e.bin
5a9ed543e74d03f35d8bdd6038e5e434602b38b8c3fa735fa66c1b9d3ffd1191
pdf-font-stream PDF embedded font (sfnt) at offset 0xE67E 4784 bytes
font_01_sfnt_off0000f6c2.bin
84ea62ef3417b45e057b05e168bca88aa5e50ba6e54dfd923010ee63ae49f286
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6C2 10204 bytes
font_02_sfnt_off000119c9.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x119C9 4324 bytes