Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3c9ba6b215f0f39…

MALICIOUS

PDF

69.3 KB Created: 2020-12-07 04:30:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 363ec6eb07baa57866bb7e5888be00a3 SHA-1: d5e8e16e7dbc661972ca6b153897a35e8c51fe2e SHA-256: b3c9ba6b215f0f393063e93e333c2c621b843df9de699281b12b9bf968d79acb
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://trafftec.ru/strik?utm_term=rust+base+building+tips PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4462976/normal_5fcb2dab6ca52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375890/normal_5f9283c37fa71.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/9183887.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466398/normal_5fb94bbf19c39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401691/normal_5fab6cd6c2ae0.pdfIn PDF document text
    • https://bimenejujuw.weebly.com/uploads/1/3/4/5/134592033/5887022.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/muvojugejoxip/mixed_present_tenses_exercises_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c20866fa-d496-4e82-a8b4-68a5bfaff969/30883898294.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8d60814-cd8c-49ff-9c26-5b18c02e80ac/beretta_a391_xtrema_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/netflix_en_op_apple_laptop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f42c90b-d1d5-4b18-b4ee-7b5b2f23166e/28376371881.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdfcf142-3963-4864-bea2-3ec54408e0b3/chronicles_of_narnia_tamil_dubbed_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6c07482-cda7-4b82-8556-8f4da5b24c15/95424595168.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_off0000d1dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DD 5176 bytes
SHA-256: 772255676951dec7ab9a44e474122ba3a09ec1ecb251cd15381e58173423a2d1
font_01_sfnt_off0000e390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE390 10456 bytes
SHA-256: 5be16131f313d91721368ce64a9d25f0bdb47b702360b4b77beaae94c0809e20