Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca588518db7e283b…

MALICIOUS

PDF

89.6 KB Created: 2020-12-29 14:24:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fb79d9f86aa39da29fbd3311e3413aa2 SHA-1: 759a53daecf30af6ec4a38133a3359fd2d1b1bfa SHA-256: ca588518db7e283bc49b884cd030e8c818287c1cfd921184af759b30e81ef542
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

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://traffking.ru/strik?utm_term=osrs+castle+wars+2020
    • https://static.s123-cdn-static.com/uploads/4425759/normal_5fe0e39f4301d.pdf
    • https://cdn-cms.f-static.net/uploads/4386609/normal_5f8fd7849f122.pdf
    • https://cdn.sqhk.co/zafupusapun/dJiggig/best_transparent_screen_app.pdf
    • https://cdn-cms.f-static.net/uploads/4461786/normal_5fdb5f9338316.pdf
    • https://cdn-cms.f-static.net/uploads/4366357/normal_5fc3788c00194.pdf
    • https://cdn.sqhk.co/juputufom/S6jjgeU/pefenisigolasax.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jeromopelurab/balokuvuzewoludamaveja.pdf
    • https://s3.amazonaws.com/wotodedaruzuk/super_bass_bluetooth_speaker_manual.pdf
    • https://s3.amazonaws.com/mudurixo/nwa_straight_outta_compton_music.pdf
    • https://s3.amazonaws.com/sojebelevenex/apache_jmeter_3._3_for_mac.pdf
    • https://s3.amazonaws.com/kavugusepe/kowazixagi.pdf
    • https://uploads.strikinglycdn.com/files/7c03c316-2af5-419a-87e0-27fe91a51198/fakevekovofinukavubumi.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
    • 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_off00010dc7.bin
7b07253dd0c5fc5016a013fecfa490376d571715a5da3cc7f4b2fcb85b6c2d66		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC7 5188 bytes
font_01_sfnt_off00011f8a.bin
4408ad57e7da85f2b7b71a6dfdf40dd97ba045c1f854fc1939c24c2de0d71147		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F8A 10680 bytes
font_02_sfnt_off00014476.bin
8e080451972fa98aa9e3536045215e62b9f74f9d761fc20c19baab760c38cae8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14476 16076 bytes

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