Malicious PDF — malware analysis report

Static analysis result for SHA-256 927a5b2e274a4e67…

MALICIOUS

PDF

71.1 KB Created: 2020-12-08 11:55:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 46e01da4843173af6ec67c0665b96f07 SHA-1: dfaf917ae519a48a0c3ec8bbef2ece3477ecf4a0 SHA-256: 927a5b2e274a4e67c78fe127ea4ac5fb1090cd6ada61bb45cc00c96f14d897c4
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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://trafffe.ru/strik?utm_term=pirate+bay+proxy+no+popups PDF link annotation
    • https://togurekeve.weebly.com/uploads/1/3/4/0/134040335/9ab638e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367633/normal_5f8756decad7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_5fa3316351790.pdfIn PDF document text
    • https://viweposedijul.weebly.com/uploads/1/3/1/0/131070314/7c2eb3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366335/normal_5fc91821a6415.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371508/normal_5fa9955b7d19b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447434/normal_5fa2fc57656eb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5d88868612547ed7fee2a/t/5fcea7226df3f351a668898f/1607378723486/my_cloud_home_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcde0513-8d27-4abf-981a-6ba5b2445750/36655589541.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e45ee498-b7dc-4712-a873-9d9ef435912b/64924715030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0adec34-58a2-42e9-b801-586e0ce2c699/vokedeguruw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ccc2504-7546-46e9-81da-671eeaef39d6/32822468355.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14f18d26ff1194f767c31/t/5fc6b3ee3c02f22b9dfb2414/1606857711252/9_months_days_hours_minutes_seconds.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1a940d2-4491-40cc-aecb-0afce2934e6d/great_midwest_athletic_conference_wikipedia.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_off0000d7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7F2 5092 bytes
SHA-256: b1fb6bbe54853cc0bca4d4b013fbf1ae9d4fc7d99c75fcce0127772349c6f0b9
font_01_sfnt_off0000e954.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE954 11284 bytes
SHA-256: 356f26013f3c938b0ecfcd7acfce1a571aa2825cb679bdd124f250ab3f7bc207

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