Malicious PDF — malware analysis report

Static analysis result for SHA-256 35775786415f107c…

MALICIOUS

PDF

67.4 KB Created: 2020-12-17 15:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: ad86708f0171f958ce2962daa81990c0 SHA-1: 1fc7bc5c7dee6e3f34b93f6016bff509718110de SHA-256: 35775786415f107cca4ee0f373d583a6a8709669b22fa16081496da2311cc348
154 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 routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/strik?utm_term=toy+blast+cheat+your+way In PDF document text
    • https://cdn-cms.f-static.net/uploads/4385437/normal_5f915df2cd0a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486215/normal_5fb2bdcb3aa62.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f8801eb23aa6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc6e713cb936d6a06a62389/t/5fce3214fe657040d5bc9cf8/1607348759123/76701409864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bbc925b-06e9-4bf0-8b36-fe63cf46b8b4/veryfit_2.0_smart_band_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/autodesk_sketchbook_apk_download_for_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8503ab4-1c5d-4205-969d-3fbe45d7a7d0/kindred_octavia_butler_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbcfde0e-fb93-4071-b381-d10a060cf8f3/rovejekesaxudalikiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abafc9f7-11c1-4dde-b312-e90baec2129f/seguvaburaketeworefezuj.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/37253161129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/856d2504-efa0-4a51-a286-59495e03c477/tri_tronics_classic_70_charger.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_off0000c9c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C5 5168 bytes
SHA-256: b5a66505f8d906e126bc989df39405882120edb887bf2bcc60d61f80b03dda3a
font_01_sfnt_off0000db67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB67 11108 bytes
SHA-256: 7c7a66b9ca808e15d6595e25de5b4facd882e79336c86afe036fc9bc9b5f62d8