Malicious PDF — malware analysis report

Static analysis result for SHA-256 5411c35cb8ebccd0…

MALICIOUS

PDF

88.8 KB Created: 2021-03-18 03:09:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fcd1b94fad7616f5a26fd8e8c600609e SHA-1: 5a5eec6e068e3f642cca295ecbe6a7ddb70f0a3d SHA-256: 5411c35cb8ebccd0dff535b7821bf615ae5c22caf8d5153fd65f24c20a973cc4
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, appears to be a lure, presenting technical-sounding text to mask its malicious intent. No scripts were extracted, but the presence of external URLs and the malware detection strongly suggest a phishing or credential harvesting 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://ponafet.ru/strik?utm_term=non+homogeneous+poisson+process+reliability+model
    • http://gibafafe.22web.org/jediganigetoxazololame.pdf
    • http://autoport76.online/educational_psychology_phd_canadaf1rkx.pdf
    • https://static.s123-cdn-static.com/uploads/4374689/normal_600045a368001.pdf
    • http://pro-konditer.com/happiness_101_with_tal_ben-shaharukru1.pdf
    • http://naturebiolog.space/72054917606sf6oz.pdf
    • http://investmag.org/control_system_theory_gtu_bookn1j1r.pdf
    • http://kieverts.xyz/196433905481fa1e.pdf
    • http://zubiki.top/dugutiriguxitidk4ci9.pdf
    • http://procripton.com/que_se_necesita_para_viajar_a_grecia_desde_el_salvadorkxcvo.pdf
    • http://mishgen.com/bradesco_seguro_de_automvelwtrnh.pdf
    • https://static.s123-cdn-static.com/uploads/4419629/normal_5ff046d68f70e.pdf
    • https://cdn-cms.f-static.net/uploads/4425514/normal_603432fc04c08.pdf
    • http://drilltech.info/joomla_3._9_templates_free_deutsch7cpg9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tufopabapud.rf.gd/50631960230.pdf
    • https://b2f02272-107b-4032-aafc-54cdd6265a16.filesusr.com/ugd/6cf392_5a720ebb8f3d404e8f188e748ae1ae54.pdf?index=true
    • http://tobitutivarod.epizy.com/pufijigok.pdf
    • http://dinixebun.epizy.com/aluminium_sheets_for_sale_south_africa.pdf
    • http://savorod.rf.gd/zasuworusagemu.pdf
    • https://23751d96-d7b3-42ca-b8ca-e459b671ea95.filesusr.com/ugd/7de994_65dc255a9220466cb1761c0a6a8e8fb8.pdf?index=true
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_f9df82528e004ddebad6e527c45a2f37.pdf?index=true
    • 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_off00010470.bin
f54225643769b5f10b9559877041f455da49f346b24b44ea30b14f5e8037faef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10470 5700 bytes
font_01_sfnt_off000117b3.bin
88eff18b44f9623a03fde29e7b8a2049a1be48c9f880bb5da056b9ce2a9d2f3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117B3 12088 bytes
font_02_sfnt_off000140e9.bin
4ef9506ee11a349461550e6b437e3786686b598308a87786035880d16624999d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140E9 16060 bytes

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