Malicious PDF — malware analysis report

Static analysis result for SHA-256 44a8af43dfb42923…

MALICIOUS

PDF

71.6 KB Created: 2020-11-26 01:32:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8e5a05405df2173a51e9cf978f2a4ebb SHA-1: 9ce408e2d9a1d073fca0b8b861c8cac599c4f7ba SHA-256: 44a8af43dfb42923ced83a83e98c7e4dee3700ed5f24350c94d06b910a6fcc89
104 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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=bahubali+2+total+collection+in+usd PDF link annotation
    • https://noduxureravit.weebly.com/uploads/1/3/4/7/134743755/gusuvunar.pdfIn PDF document text
    • https://jumirusuvowelu.weebly.com/uploads/1/3/4/6/134632856/xajavul_lovozowelunozon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366321/normal_5fad71cd72c2f.pdfIn PDF document text
    • https://nugekowu.weebly.com/uploads/1/3/4/5/134587082/9409160.pdfIn PDF document text
    • https://kinigapiluxuke.weebly.com/uploads/1/3/4/8/134863840/5663860.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/dutimajizowa/bullying_psicolgico.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73e3ed2d-1ae9-4728-a2c7-2218c83ba219/81456851859.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/wexazagimuvafefasamiw.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/93563025339.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b99f01c0-c4a5-43b7-9522-da473fb74437/35683492499.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_off0000cc8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC8D 5132 bytes
SHA-256: c8ec8253e56dd53a55cae37272a1ba849e6bdb69eb668d6a32a83acb1c19f431
font_01_sfnt_off0000ddef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDEF 11088 bytes
SHA-256: 2d83f40f1ee5c49042322bb3cd81c6c512fc9cf62763883be2155940df429bb4
font_02_sfnt_off000103e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E3 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230