Malicious PDF — malware analysis report

Static analysis result for SHA-256 358eb349b7862d27…

MALICIOUS

PDF

81.0 KB Created: 2021-03-28 06:23:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e36ca5dc2d8c64a43708933b7b410456 SHA-1: 7fc94dd246acde1fc03719a3206de594cb834295 SHA-256: 358eb349b7862d2761f72e8e4c7a57179da60585266f7bc34397ada9c1d0e142
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, identified as malicious by ML classifiers and ClamAV. The document body, though heavily obfuscated, suggests a lure related to 'cavitation in pump pdf', likely intended to trick users into clicking the malicious link. No scripts were extracted, but the presence of external URIs and the overall detection by security tools indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://leonvi.ru/award?keyword=cavitation+in+pump+pdf
    • https://cdn-cms.f-static.net/uploads/4387821/normal_600b550a64315.pdf
    • https://cdn-cms.f-static.net/uploads/4481162/normal_602a7dcbbc9e6.pdf
    • https://cdn-cms.f-static.net/uploads/4383917/normal_602c581014d62.pdf
    • http://zutelotojenexop.getenjoyment.net/vetepexamenijomij.pdf
    • http://fawikenaxalu.scienceontheweb.net/gre_biology_syllabus.pdf
    • http://dogalijun.scienceontheweb.net/48847135984.pdf
    • https://cdn-cms.f-static.net/uploads/4486563/normal_5fe9da51bb507.pdf
    • https://static.s123-cdn-static.com/uploads/4394060/normal_5fc63f4301d9c.pdf
    • https://cdn-cms.f-static.net/uploads/4420018/normal_601291e31dd3c.pdf
    • http://jorowijedo.mywebcommunity.org/tripartite_guidelines_on_fair_employment_practices.pdf
    • https://cdn-cms.f-static.net/uploads/4489429/normal_602a566da1f09.pdf
    • http://fojukivijivik.medianewsonline.com/does_goat_simulator_have_online_multiplayer_ps4.pdf
    • https://cdn-cms.f-static.net/uploads/4366063/normal_603d0cb3396cf.pdf
    • https://cdn-cms.f-static.net/uploads/4379841/normal_602909c1502f7.pdf
    • https://cdn-cms.f-static.net/uploads/4423431/normal_5fe86be167b6a.pdf
    • https://cdn-cms.f-static.net/uploads/4417530/normal_60104dbfb509f.pdf
    • https://static.s123-cdn-static.com/uploads/4482189/normal_5fdfef9e49144.pdf
    • https://cdn-cms.f-static.net/uploads/4447093/normal_6023f20c4c0f1.pdf
    • https://static.s123-cdn-static.com/uploads/4466172/normal_5feb3329c5537.pdf
    • http://jolidulikan.scienceontheweb.net/nowip.pdf
    • https://cdn-cms.f-static.net/uploads/4489846/normal_601b6436f414a.pdf
    • https://cdn-cms.f-static.net/uploads/4421342/normal_600db3d21cd47.pdf
    • https://cdn-cms.f-static.net/uploads/4403804/normal_6027de2b69b41.pdf
    • http://jenewazajasazu.getenjoyment.net/atem_software_control_free_download.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pasofotamuteper.atwebpages.com/closely_coupled_and_loosely_coupled_configuration.pdf
    • http://lupixopuvir.onlinewebshop.net/jugorida.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_off00010211.bin
01a3e6b509eaac10f6f163249eb53fff7292634f304d790cc0054058cfb44eef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10211 4844 bytes
font_01_sfnt_off00011289.bin
dd270b4f9b3c1ca83351c39358f637462a4c0adc9f077f229ea494ee0ac1990f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11289 10464 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.