Malicious PDF — malware analysis report

Static analysis result for SHA-256 57febe2febbd421c…

MALICIOUS

PDF

72.9 KB Created: 2021-01-16 13:53:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 5b58b5d251ff56f8239fb7d26ecdd0c7 SHA-1: 3acd948e4f93c6a4ffd0b8e72370cfeb099fdb30 SHA-256: 57febe2febbd421cda1426ee8398ddf3e866f6de3d30fc2efd55805a6a6483ed
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. 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 0.9969

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/aws?utm_term=smule+cracked+apk+onhax PDF link annotation
    • https://site-1168088.mozfiles.com/files/1168088/kobalt_power_tool_set_lowes.pdfIn PDF document text
    • https://site-1197316.mozfiles.com/files/1197316/balancing_equations_worksheet_about_chemistry_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/farosexuto/4hhgcjV/52206579273.pdfIn PDF document text
    • https://cdn.sqhk.co/masamiwe/gd8xZMk/filipakoxunobatolo.pdfIn PDF document text
    • https://koxawikala.weebly.com/uploads/1/3/4/6/134643159/7131581.pdfIn PDF document text
    • https://wisowoturap.weebly.com/uploads/1/3/1/4/131453432/ladijurafozi.pdfIn PDF document text
    • https://cdn.sqhk.co/pevizopubok/hjPjjjd/91566668476.pdfIn PDF document text
    • https://rimofunoduw.weebly.com/uploads/1/3/4/5/134525219/2406171.pdfIn PDF document text
    • https://site-1206062.mozfiles.com/files/1206062/infection_demo_fps_survival_simulator.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e030.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE030 5372 bytes
SHA-256: d2c4722d00284c9d0eec9fc0701c478f374546816e3b5349acc675acb5c7a2b7
font_01_sfnt_off0000f24c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF24C 10964 bytes
SHA-256: 33c4dbf8e8944e86f06576c96da367a8194cb539cc6c7d7cd6f34e310262a925

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