Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2df575c2fca74fb…

MALICIOUS

PDF

71.5 KB Created: 2021-03-18 08:01:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bf01b59fc7993d0e979c0f7de57f6311 SHA-1: 7e9928f2076317a7ca238d8908d98ef93206ef8c SHA-256: f2df575c2fca74fbf60dc68f6dbab46e3437b59e053eda3ec34bfcf03082ec36
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and numerous other URLs suggest a phishing or malware distribution scheme, likely initiated via spearphishing. The document body, though heavily obfuscated, contains references to 'Omnisphere 2 preset bank free', which is a common lure for distributing malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=omnisphere+2+preset+bank+free
    • http://mailedflkf.site/xoravudasaponi7qnqh.pdf
    • https://cdn.sqhk.co/fapiwejagiz/dojhif8/85839305263.pdf
    • http://smirno.life/miguel_serrano_nos_el_libro_de_la_resurrecciongob2l.pdf
    • https://cdn.sqhk.co/bidogefapo/Lghygje/mediq_health_coaching.pdf
    • https://dazuvekojuj.weebly.com/uploads/1/3/4/8/134863877/fupavorutasezakeba.pdf
    • https://rawoxozuk.weebly.com/uploads/1/3/2/6/132695352/naxukavivutulujel.pdf
    • http://fruct.space/misulijaxenegurigufidex8c6qa.pdf
    • https://donedujawag.weebly.com/uploads/1/3/4/3/134315137/6130865.pdf
    • http://doctorzlo.com/operating_system_not_found_vmware_fusion_maca5jil.pdf
    • https://cdn.sqhk.co/vawikepaf/SZN7ji6/97862123531.pdf
    • https://cdn.sqhk.co/nobipajami/ahgyjcX/3d_origami_heart_youtube.pdf
    • http://callipakk2.site/how_to_get_replacement_directv_remotefuzte.pdf
    • https://zavowije.weebly.com/uploads/1/3/2/6/132680855/4866917.pdf
    • https://budamasut.weebly.com/uploads/1/3/4/9/134903336/nunuvumuvabawirij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://bolopanezodubun.rf.gd/27495594546.pdf
    • http://zawanotatunum.rf.gd/tidujik.pdf
    • http://lovopezabima.epizy.com/jumble_answers_9-_20-_19.pdf
    • http://xeduniramabal.rf.gd/83861327172.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_off0000d61e.bin
a10e8e3dcd17fcf854754cd68d7179b25e8c4b682a60e177e422585aa514dbd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD61E 5472 bytes
font_01_sfnt_off0000e888.bin
0afece6aa9ebe60454ad2087d8b240c4cee468e3c68b36aa77c5ae40caa7ba82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE888 11780 bytes

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