Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b229e39600a67ec…

MALICIOUS

PDF

75.6 KB Created: 2021-03-03 19:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58ad4ae351ea4b9a6d587ca21d749388 SHA-1: c8fabaea289ca9db9459c91b28b29ce044efc663 SHA-256: 0b229e39600a67ecb94d37544c1f4fdeb47f8066922880facf07b583cdcf7b3e
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and the ML classifier and ClamAV detection strongly indicate maliciousness. The document body, though heavily obfuscated, suggests a lure related to connecting a Sony device. The presence of multiple PDF_URI heuristics and the overall detection score confirm 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://jacksth.ru/strik?utm_term=how+to+connect+sony+wx-gt90bt
    • https://cdn.sqhk.co/zikufivol/jjWidbM/kezafufazopubobi.pdf
    • https://cdn.sqhk.co/sabiwizi/igUVjhz/didanobif.pdf
    • https://cdn.sqhk.co/junikesiza/IEfgdJZ/38044561171.pdf
    • http://nopokavami.iblogger.org/bengali_calendar_1426_full.pdf
    • https://cdn.sqhk.co/kigaratak/jazBRjd/lefapafopibokavuvasusuv.pdf
    • http://kivanonox.iblogger.org/72593806406.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://zulidemuw.epizy.com/sistema_mexicano_de_alimentos_equivalentes_excel_descargar_gratis.pdf
    • http://nononowixumutu.rf.gd/76140479852.pdf
    • https://s3.amazonaws.com/zopenave/free_residential_lease_agreement_form.pdf
    • http://wewejozajukenat.rf.gd/82510772795.pdf
    • https://s3.amazonaws.com/mozedijiz/xasusowelisetizutatasu.pdf
    • https://s3.amazonaws.com/takurugilij/censor_beep_sound_effect_free.pdf
    • https://s3.amazonaws.com/vebogotexaf/25926644298.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de18.bin
312279de4c94e4e748d3a7890aa78135fada3d4c50b0746a054cb589742ae102		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE18 5060 bytes
font_01_sfnt_off0000ef77.bin
35a556c3f309a81824ab15f061dbdff71ab1250d2b676e9817bcf65965c8bb05		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF77 10544 bytes
font_02_sfnt_off000113b4.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113B4 4324 bytes

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