Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ea20949a5f42e6c…

MALICIOUS

PDF

75.0 KB Created: 2021-02-18 11:17:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: b567a873a495e0e03adadb2eff88a849 SHA-1: 53e2b4c82e41de7eeeff7e074586475cc1f6919f SHA-256: 9ea20949a5f42e6cd72f7e891ff54d1020b9c4349356092f5ad345a62fa37a2b
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that advertises a free PC game download, a common lure for phishing and malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URI suggest it is designed to redirect users to a malicious site, likely for further payload delivery.

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://seumenha.ru/strik?utm_term=final+fantasy+7+remake+pc+download+free+full+version PDF link annotation
    • http://varnisvakq.ru/trane_thermostat_xl824_instructionsghkik.pdfIn PDF document text
    • http://betmoy57.com/bawofukmhnp.pdfIn PDF document text
    • http://busivel.xyz/sultan_forces_modkedyj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409394/normal_602228412a3d4.pdfIn PDF document text
    • http://flowerport.shop/how_to_read_act_ffxiv0d2cy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424010/normal_5fe2dce0ab901.pdfIn PDF document text
    • http://hookup757.fun/540809806122wuzq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/couple_hug_hd_wallpaper.pdfIn PDF document text
    • https://s3.amazonaws.com/lokijuronig/nebupejowixidifavopisapog.pdfIn PDF document text
    • https://s3.amazonaws.com/gekojulog/kurenigelovegujepukilafod.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/how_much_do_sa_special_forces_earn.pdfIn PDF document text
    • http://lulanikigog.epizy.com/game_avatar_apk_data_android.pdfIn PDF document text
    • http://jukiwifid.rf.gd/cursive_letter_b_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/susonanezaj/85997524816.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e732.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE732 5656 bytes
SHA-256: f4c746bb81ebe585a88fa8ef252cf2e902474712ab09b90f9f91d0aece576f32
font_01_sfnt_off0000fa89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA89 10560 bytes
SHA-256: 908505cce941fad4dad653b74edadd0a16917410062793ced896892fc600196b