Malicious PDF — malware analysis report

Static analysis result for SHA-256 cded819c301bbd90…

MALICIOUS

PDF

69.2 KB Created: 2020-12-27 19:33:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 78f2f5f4ff6bfc71f88741ab6f5e55ac SHA-1: 17e01db732d999cd60248f5039b8dcb0d0af8a38 SHA-256: cded819c301bbd905128c64538ec2e5357bfd952430b69749d87d13d91195bd7
104 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely serving a malicious payload. The presence of a download button lure further supports the phishing and execution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffi.ru/strik?utm_term=train+to+gensan+cheat+apk PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4500679/normal_5fdfb73fc1ab6.pdfIn PDF document text
    • https://cdn.sqhk.co/jeposanop/igVpRNH/62442659896.pdfIn PDF document text
    • https://cdn.sqhk.co/kupemopo/hjjajcN/offline_fm_radio_app_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408720/normal_5f974ca146bdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450353/normal_5fa2156652a99.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456705/normal_5fc867d0c0394.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469640/normal_5fb65f5d8bc95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370088/normal_5fcea740eb248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453885/normal_5faf333ceaf49.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381539/normal_5fbc57e2a520d.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/kopisigapub/vujulutosixu.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/bihar_police_constable_online_form_date.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_off0000d1ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1CA 5176 bytes
SHA-256: 175dbd49e5313f13b70c644ebbd258eae408f717f157c2740640856a51ad828b
font_01_sfnt_off0000e365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE365 10700 bytes
SHA-256: 8c6ae4d818cb8127916b17221fe6c267d1b81c2b836570dee984a9289a1b8ab0