Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f0a20dbc356943…

MALICIOUS

PDF

75.0 KB Created: 2021-03-07 03:06:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 2f5de62f37ac932bde9e9db6ed0eb49b SHA-1: 7b699797c13b737d651c780dfb509afb9f378c66 SHA-256: f2f0a20dbc356943d701452c9191b025f74036419710d6e228227e30e7b3fa78
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL is likely used to redirect the user to a phishing site or to download a secondary payload. No scripts were extracted, but the presence of an external URI and high ML confidence suggest a phishing or malware delivery attempt.

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://botokaw.ru/wix?keyword=one+more+cup+of+coffee+lyrics+dylan PDF link annotation
    • https://xesisawizes.weebly.com/uploads/1/3/1/6/131606125/lobadugami.pdfIn PDF document text
    • https://jowavuzawevubab.weebly.com/uploads/1/3/2/3/132303017/ffcf9.pdfIn PDF document text
    • https://jegupifak.weebly.com/uploads/1/3/4/0/134018348/8117141.pdfIn PDF document text
    • https://cdn.sqhk.co/lafixafif/icXwYhj/liputiberox.pdfIn PDF document text
    • https://cdn.sqhk.co/velujuvaxal/gehazxJ/instagram_hashtags_for_likes_and_followers_photography.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://watusinujebisu.rf.gd/39034079116.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/over_the_air_tv_guide_boston_ma.pdfIn PDF document text
    • http://darajakejaxise.rf.gd/video_maker_app_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/36514938900.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/gexuxesinokepepi.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/where_does_like_water_for_chocolate_take_place.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/53896897625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7cc8f27d-d1e6-4d6e-b30e-8c6fe21342b6/best_universities_to_study_ethical_hacking.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/62654114571.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/wajadetinoteku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74ef01aa-99d8-44c5-ae31-f4c0316bfa43/hp_stream_11.6_review_2019.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_off0000e8ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8ED 5432 bytes
SHA-256: a9c04045ec353ffa24df37a7357387d15e822c3a6852f36a8779c5f2423ee15d
font_01_sfnt_off0000fb56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB56 10472 bytes
SHA-256: 888a88b2334d70642d8a23220b5c020571afe9959608d1cd7f73dd4efe4b733a

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