Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d536a081f61fdb…

MALICIOUS

PDF

71.8 KB Created: 2021-03-02 03:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ebafb5d1e954a26102eafb3f83a51dd SHA-1: 2cd1f0cf52dd6160add840b8123f0b7ed06bfa5d SHA-256: 80d536a081f61fdb76933f8c3fda0a456df89af66e9ba68a7a7608dd09c74d8e
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'pelibifir.ru' suggests the document is designed to redirect users to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

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://pelibifir.ru/wix?keyword=la+sportiva+python+sizing
    • http://worelimupuvefam.mywebcommunity.org/fojenedasuxadapirokaxisu.pdf
    • http://testertumentum.space/estudio_de_mecanica_de_suelosppzju.pdf
    • https://cdn.sqhk.co/xeposetuge/vghZoEF/hd_space_mobile_wallpapers.pdf
    • https://cdn.sqhk.co/kerikone/fja9ian/ikea_desk_chair_mat.pdf
    • https://cdn-cms.f-static.net/uploads/4367648/normal_603cfb16a7b98.pdf
    • http://albatros-trans.ru/lekumuswpta.pdf
    • http://copyrighthelpbusiness.net/pomitaltkh6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wemazun/25745537007.pdf
    • https://s3.amazonaws.com/dalava/pre_drilled_melamine_shelving_sheets.pdf
    • https://s3.amazonaws.com/vuzufexarevima/iit_bombay_placement_report.pdf
    • https://s3.amazonaws.com/vazisi/labuxilezefowukuneze.pdf
    • https://s3.amazonaws.com/galinikagopit/nuranisupisubewutawawav.pdf
    • https://s3.amazonaws.com/kumasala/momidapisawadexusupobirub.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dcb3.bin
d71109935cc8842b028933f57e1961e50e885b2196cdc0714e814e9685a96fc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB3 5200 bytes
font_01_sfnt_off0000ee7e.bin
909dd4c2c14ee2f95b7822b26ec7be9d96a819de062cbe85ceb8a8b05eed1799		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE7E 10652 bytes

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