Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec329c0b41ea69d…

MALICIOUS

PDF

108.3 KB Created: 2021-03-04 12:57:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3912cc83f87328fc77214ab635f1c04d SHA-1: eb35069b94ca5aeb246ee38ff3f17474a195e29b SHA-256: bec329c0b41ea69d3175b4bfb7a8b81ceb1574b047b6f85a420a787bb5a2f145
96 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into visiting a malicious URL, consistent with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/123?utm_term=libros+de+fisica+fundamental+tercero+basico+pdf
    • https://cdn-cms.f-static.net/uploads/4382412/normal_5fda195170d3e.pdf
    • http://towufato.mywebcommunity.org/61947275701.pdf
    • http://wivaserana.mywebcommunity.org/best_business_analytics_courses_in_india_with_placements.pdf
    • https://static.s123-cdn-static.com/uploads/4375696/normal_5fef7fc7d4ae5.pdf
    • https://static.s123-cdn-static.com/uploads/4488100/normal_5fcb5e63c9f18.pdf
    • https://cdn-cms.f-static.net/uploads/4417659/normal_600fbd8ee06a6.pdf
    • https://static.s123-cdn-static.com/uploads/4376849/normal_5fe0433fad24c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gixiluvigatekij.atwebpages.com/selegidojexew.pdf
    • https://s3.amazonaws.com/tarizirefevifab/gogekezigowaxesijafija.pdf
    • http://pegesij.rf.gd/airplay_windows_10_free.pdf
    • http://zowofiz.myartsonline.com/user_manual_for_samsung_gt-p3113.pdf
    • https://s3.amazonaws.com/wewuxuviwar/color_matching_worksheet_for_toddlers.pdf
    • https://s3.amazonaws.com/midaguvimabof/domenesedit.pdf
    • https://s3.amazonaws.com/vonutavekip/architect_portfolio_website_template.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014cfc.bin
aeee414f863f32803e874565684700c0dbab6f2f9725e4efddeebb701fd609f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x14CFC 5384 bytes
font_01_sfnt_off00015f30.bin
dee62ca6217e7ef02cc24f8512ee25fdade0953e62b95b0ccb6a0fa847fbc911
pdf-font-stream PDF embedded font (sfnt) at offset 0x15F30 13676 bytes
font_02_sfnt_off00018c19.bin
1255ecd6222223032ac629bed71250f3c20378f69226965ed0f4d86573ab8531
pdf-font-stream PDF embedded font (sfnt) at offset 0x18C19 16308 bytes