Malicious PDF — malware analysis report

Static analysis result for SHA-256 2954f94406b4a820…

MALICIOUS

PDF

76.4 KB Created: 2021-03-05 08:03:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: daa06e05db6259b84320a5e102384b97 SHA-1: b09cd1dd1d9c0ce2ac161fb4042244c38aa80849 SHA-256: 2954f94406b4a82027acd7833aa824bd9dd0d318f46852cdafa6e266539748dc
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of a visual download button lure suggests a phishing attempt to trick the user into downloading a payload. The embedded URLs likely point to the location of this payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://xezojetit.ru/strik?utm_term=rii+mini+wireless+keyboard+mouse+touchpad+combo+x8%252B PDF link annotation
    • https://cdn.sqhk.co/desiruzag/Njfiehw/troom_troom_en_espanol_munecas.pdfIn PDF document text
    • https://cdn.sqhk.co/nosuterib/gjcb5tX/vefokufexonolirit.pdfIn PDF document text
    • https://cdn.sqhk.co/mobirewin/czjige9/76236351812.pdfIn PDF document text
    • http://zevewidojodot.mywebcommunity.org/fender_super_champ_x2_special_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455194/normal_5feaedf976d97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379613/normal_5fdb29fe3d90f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428341/normal_602ad64d15b36.pdfIn PDF document text
    • http://xemokajoled.medianewsonline.com/percy_jackson_2_streaming_film_complet_vf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457006/normal_5fed945f594c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371536/normal_600ee75bde83e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465924/normal_60224b6d1107c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374976/normal_5fe45464766b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476146/normal_6000c97168976.pdfIn PDF document text
    • https://cdn.sqhk.co/retirifurew/3higjDW/best_big_button_mobile_phone_for_seniors.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424996/normal_5fd088cc56968.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482882/normal_5fc5bebbbc82d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409258/normal_600f768fda3ee.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/jadudusujuje/how_to_download_python_language.pdfIn PDF document text
    • http://kepagewav.atwebpages.com/57174404816.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/nuvugowisofufukex.pdfIn PDF document text
    • https://s3.amazonaws.com/jepavilutabilel/doluxegifulexelenof.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_off0000eade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADE 5980 bytes
SHA-256: 936a66251a6b163ec6f04facd9f7c942eebc6c59af24d81752e6c199e24e87f0
font_01_sfnt_off0000ff20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF20 10836 bytes
SHA-256: d2582ad85aedf17870687178131c3934a07921d2c0a3518803afe8f167678353

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