Malicious PDF — malware analysis report

Static analysis result for SHA-256 a10d680663d8c02b…

MALICIOUS

PDF

65.7 KB Created: 2020-12-08 01:40:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6c56111b320c7633a9ab8963f820f42e SHA-1: 2be6d9f1078ab799928b568a7891e0833c465f62 SHA-256: a10d680663d8c02b89d00208a481b534a9005dc5defc26adb7dade03617d3870
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 0.9997

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://trafffi.ru/strik?utm_term=public+school+works PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/purixifusipelid/internal_audit_non_conformity_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4361f17-46b2-4419-8db5-42a2ff9c9c98/7213052062.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe237b173fb5383b6b362d/1606296443518/77369928880.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf52559ee0f32b874a6672/1606373974070/katabavafusawoboto.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2f9eaa3bf4b14abb69cf4/t/5fcc2c71e43f2b00a89935f2/1607216241959/mobile_logo_png_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10f7f085bf90c0efdfe77/t/5fcdbcdc2bc7884852d43668/1607318748689/litetubivexajuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/7042055563.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/78541137782.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/292378a4-2ad1-464e-b432-598dacab5924/97288540079.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcdf613169f3e188a7a5d55/t/5fcebc58e4d8f2662cfd05f2/1607384152987/pijabuveler.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0c362403f5353fd950a5e/t/5fc1445a5147b148046218d1/1606501466874/shelby_county_school_calendar_20-21.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28ae3ec917750a3e23ff5/t/5fc50a30e6d49a06bb319905/1606748721003/34237382550.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bb19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB19 4552 bytes
SHA-256: 373fa47f1da658d1c12305f96cf896d144cd4d9fcf4c2154d0d08f0389102b0b
font_01_sfnt_off0000ca9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA9B 9888 bytes
SHA-256: 845e88a9344634eb33de1a7d05614fd15cd78f9e26444bcab503bce9bb8c0db8
font_02_sfnt_off0000ec64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC64 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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