Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3a3d6d47594a32b…

MALICIOUS

PDF

82.4 KB Created: 2021-02-16 02:46:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 6aee068c0d0e8e7624c75abae90cfe08 SHA-1: 36bb30e0f2de930f354a0c72dd68cec9ee3fc2f9 SHA-256: a3a3d6d47594a32b2da2c121a398e612aa0c758b131e28351f21a115f9582dbc
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely intended to host a phishing page or download further malware. ClamAV and ML classifiers strongly indicate maliciousness, and the document body, though heavily obfuscated, suggests a lure related to product reviews. The presence of an external URI points to the execution of a malicious script or redirection to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=powerstroke+3100+psi+pressure+washer+with+yamaha+engine+reviews PDF link annotation
    • https://cdn.sqhk.co/dabozijide/aFqciM1/shooter_jennings_marilyn_manson.pdfIn PDF document text
    • http://xplaintome.ru/29554774307d436u.pdfIn PDF document text
    • http://reduslimitaly-ufficiale.website/78830833925yw267.pdfIn PDF document text
    • http://douchehub.xyz/64441227495rvfle.pdfIn PDF document text
    • http://it50off.pro/game_camera_that_sends_pictures_to_your_phone_amazon30fo4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455198/normal_5ff64fd15b800.pdfIn PDF document text
    • http://praktika-ingenieur.com/vosiwonorenipivorejosukor3prwo.pdfIn PDF document text
    • http://teksalle.xyz/changing_dryer_belt_maytag_performatg819.pdfIn PDF document text
    • https://subomegufixaj.weebly.com/uploads/1/3/6/0/136055214/2eee5300.pdfIn PDF document text
    • http://wersita.space/antibiotic_guidekevrj.pdfIn PDF document text
    • https://tuzuvujejoru.weebly.com/uploads/1/3/4/4/134442534/vosafo-bisubuwodonakus-jefatolurunivum.pdfIn PDF document text
    • https://gatojodegapov.weebly.com/uploads/1/3/1/6/131637656/e4372e.pdfIn PDF document text
    • https://vanazufir.weebly.com/uploads/1/3/2/7/132740694/xoligiziziretag.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/29710357112.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/arua_chaula_duba_full_song.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/xoxogajadivusapufike.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/21002508111.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF299 5760 bytes
SHA-256: 109ef196aa89461b2fa5cc3678e820fb1f57eadc74da2504504bde776bf39308
font_01_sfnt_off00010631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10631 10872 bytes
SHA-256: 3b6e99f5d0a555f499f556335d5d914b28598e5544faaf656fc7a1eb46ca17c2
font_02_sfnt_off00012b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B2B 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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