Malicious PDF — malware analysis report

Static analysis result for SHA-256 6dee0bb60c2e4d08…

MALICIOUS

PDF

76.0 KB Created: 2021-05-23 05:56:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: b2e4a1c7216e3bd25c72ec79473c4c9d SHA-1: 83886832ff0f2542b8e0c28dd24791c3f01e168c SHA-256: 6dee0bb60c2e4d08f7da46f84b1ca4729b4a07ba3f0dbd575b5500e963d70c91
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that mimics a search result, aiming to trick the user into visiting a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI is a primary indicator of compromise.

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://lozipotod.ru/strik?utm_term=how+to+start+factions+in+minecraft PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4448548/normal_6063b53bb85f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381546/normal_6058e34adf205.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414500/normal_60394bffc8c49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454968/normal_6012e0a336141.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_60394ca2d65af.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454172/normal_5fd0703061142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379485/normal_600cb3b32ff46.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481155/normal_6020821c10488.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497369/normal_5fd1636d4692e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369323/normal_6009f5dc5c45d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473035/normal_605f662fb17a3.pdfIn PDF document text
    • 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/vudivuzakal/76905152045.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/pobut.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/venous_ultrasound_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/tobobowu/candid_camera_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/72553983330.pdfIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/57721480488.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/taburidakogorosirid.pdfIn PDF document text
    • https://s3.amazonaws.com/dozore/52655059472.pdfIn PDF document text
    • https://s3.amazonaws.com/wukara/dewixasoragiz.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000deca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECA 4836 bytes
SHA-256: 5fb67c2c997684df90e17f70eb22cd5102f1dec3d5e9b52a66dce2f5469006e8
font_01_sfnt_off0000ef1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF1D 11052 bytes
SHA-256: 8070f3b44427d2cffb6770f0998c893f5408cfbc46f0c2e2660b9b5a80f48baa
font_02_sfnt_off000114f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F4 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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