Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd82d241591ee426…

MALICIOUS

PDF

64.5 KB Created: 2020-11-13 20:09:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c0f76636254e2dd489bf9241de06995e SHA-1: d133f8fb36e383cc680e77383aa72bdc2733bf7a SHA-256: cd82d241591ee426244e24560900cc94ab68a6daef3a3559412de0f899b90907
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://traffnew.ru/123?utm_term=duik+bassel+user+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f8bdb894faa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_5f9e529e98f58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446636/normal_5fa600e1efc20.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/papedevevin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445882/normal_5fa350be35620.pdfIn PDF document text
    • https://noginoludaven.weebly.com/uploads/1/3/4/3/134374582/38e16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421630/normal_5fad4e5f43e19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5fa86af59ba76.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/baputedev.pdfIn PDF document text
    • https://niweduval.weebly.com/uploads/1/3/4/3/134349673/7e71f411.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367635/normal_5f930d213e20b.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/nokiwovowus/yard_sales_montgomery.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/26764916642.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_off0000b3d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3D8 4784 bytes
SHA-256: 05547f8c8d4c5b81d09204896560d89d638b01bf4ee73c176fca388e8046c97b
font_01_sfnt_off0000c41a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC41A 10396 bytes
SHA-256: 379b57a1d2b208a3cd47d3b58343efa75507f19b0491f0b1f94d2811b6a297ea
font_02_sfnt_off0000e7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A8 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2