Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a607413d7c09ee0…

MALICIOUS

PDF

49.6 KB Created: 2021-02-13 22:51:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 54d03ac6a497adef9fef037c5446eb36 SHA-1: e3275d1792708ac552f74d66284df627c4860076 SHA-256: 7a607413d7c09ee0cdd7e1a78d4a2324c9bf3762061154cd8f6434877c5fb3d7
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a LOLBin command-execution lure. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5623

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://crophysi.ru/aws?utm_term=excel+subnet+calculator PDF link annotation
    • https://wefizaxire.weebly.com/uploads/1/3/0/9/130969527/371ee4.pdfIn PDF document text
    • https://gekubuneka.weebly.com/uploads/1/3/4/0/134041200/juzemom_balen_dowisive.pdfIn PDF document text
    • https://dirivabekere.weebly.com/uploads/1/3/3/9/133999762/todoroxo-rewowosubefoxop-widarapigeresep-nosupesudi.pdfIn PDF document text
    • https://cdn.sqhk.co/tuzevawu/sOhhhha/75474161055.pdfIn PDF document text
    • https://cdn.sqhk.co/fewibefanid/Hjjauqq/labyrinth_maze_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/tuzevawu/sOhhhha/754In macro / runtime command snippet
    • https://s3.amazonaws.com/tanikanaw/gapujazowubidapejome.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/bicep_curl_right_form.pdfIn PDF document text

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