Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ea3d3fbd4f2d8f…

MALICIOUS

PDF

67.1 KB Created: 2020-12-18 04:54:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 08e51b01582db6d26329d3b337edcf70 SHA-1: 938462d53783932cc10d6216c11545d8dbd62eda SHA-256: f6ea3d3fbd4f2d8f6ab962e6d572d04763d338576f02017b00207908b8e54c9d
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a password-protected-archive 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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://trafficel.ru/123?utm_term=god+of+war+art+book+pdf+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409998/normal_5fa5a296ea7e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381766/normal_5fbb8a3ea35c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448713/normal_5fa728bb807b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385634/normal_5fd6392744298.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f9d12226741c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/leguvefu/53995950913.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc546da405d5340f34687f1/t/5fd643299264095525cf5b1e/1607877420470/atlantic_bojleri.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/snapchat_hack_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/70039193676.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/jonomuzajezakawewu.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/john_locke_worksheets_for_students.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc50a730b6b03258f4ffca1/t/5fc93d9a4480646fe475c49d/1607024027411/lavasapumogararamuxuwawop.pdfIn PDF document text
    • https://s3.amazonaws.com/nopomewegobij/windows_password_change_usb.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe013f645712565400a2a3/1606287683086/volume_of_a_cylinder_practice.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_off0000be72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE72 5184 bytes
SHA-256: 92fc77f3a8973a042d97c87b91ff65367458d0fa75e8d5c9cfeb5bc47cf55a36
font_01_sfnt_off0000d03a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD03A 15012 bytes
SHA-256: 07cc190401e37a55c03419e286226dfda0bb75c0c4083dddcb81381bc9280c7f

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