Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfe2261e0557426a…

MALICIOUS

PDF

69.6 KB Created: 2021-03-18 02:57:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2b06cff9d838fd7daa39d7ede84a897b SHA-1: 228733c386abd5f8398fa3c313f36a2f74cd99b1 SHA-256: bfe2261e0557426a3ff4d5ab5ca5eaefb1804c19a137b1b35378e2c8339279ab
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 0.9996

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://xajibur.ru/strik?utm_term=matlab+plot+points+and+line PDF link annotation
    • http://jenerotisa.mywebcommunity.org/ata_standards.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422638/normal_6014529fd46f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377925/normal_605260242fada.pdfIn PDF document text
    • http://dapovevi.mywebcommunity.org/aircraft_maintenance_engineer_course_in_india.pdfIn PDF document text
    • https://cdn.sqhk.co/kudozaporuro/iygijif/space_pinball_classic_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379859/normal_5fedfea707fbb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478950/normal_60066e504abab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367903/normal_60473d88631e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476446/normal_603bf9bc91afa.pdfIn PDF document text
    • https://cdn.sqhk.co/pogadidotilu/hagdjdr/funny_ringtones_download_mp3_for_mobile_pagalworld.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_6048570b7c24b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379053/normal_603fcaab38039.pdfIn PDF document text
    • https://cdn.sqhk.co/mudemodox/inA502h/5386030980.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444374/normal_6020fd466a506.pdfIn PDF document text
    • https://cdn.sqhk.co/daxegajok/Yyuhxq2/40686823483.pdfIn PDF document text
    • https://cdn.sqhk.co/muditazu/jjbhhVu/99319637483.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3dd46306-de79-43ea-8896-00eaca00fa2c/25162272573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f5e1e65-4267-493e-8219-1cc78fd3ef6a/ridavugibevekajazus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2f00e37-cad3-4e3f-b61c-90ebf45f0df9/94955614087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19bb8cc1-e9d2-4725-8c29-ec8af769aa5a/pojitixagolira.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb06a7dc-bf74-47aa-b446-3f51815b507d/madame_butterfly_savannah_ga.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_off0000d481.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD481 5004 bytes
SHA-256: 1fa80257a18221a9105669debcfe80ecaa79cd4188cc4bee6a5c0786d9135d9d
font_01_sfnt_off0000e598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE598 10232 bytes
SHA-256: 2d98505718aaa1d776d13d18148f687672f764d271bde721f465dc639d17c60a

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