Malicious PDF — malware analysis report

Static analysis result for SHA-256 882900ef419a78ce…

MALICIOUS

PDF

63.7 KB Created: 2020-12-07 22:58:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: a12718f86a2e9b8546712f2932b97ac8 SHA-1: d797c1a7b370d0e249fec96903852aa66e6387e2 SHA-256: 882900ef419a78cea2020066f499793a0856b4078d930d6f55f9f1db95c107f4
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://traffine.ru/strik?utm_term=addendum+to+lease+sample PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447466/normal_5f9e3c1a1dbc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369343/normal_5fbf0cc168f77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454995/normal_5fad477dce35e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/569aa094-dadb-4d4d-be2d-c1d1806891f8/89343671932.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/65466999596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e1be027-3e8b-49b3-9bff-0d3670b0b2f0/fevides.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/proof_by_contradiction_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54a9659c-65d5-40bb-90c6-bdf019821ad7/bissell_proheat_turbo_2x_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/juxatop/mudflats_galena_ohio_menu.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/nefazabugilawilasan.pdfIn PDF document text
    • https://s3.amazonaws.com/legapatatezisa/wuxixunatevorakovasi.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/last_christmas_piano_sheet_easy_free.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_off0000bdfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDFC 5000 bytes
SHA-256: 9090c1cc9884b589c85cf07ce87b737526e570aeb9d84f1139aaa67c55dbd80a
font_01_sfnt_off0000cee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE4 10336 bytes
SHA-256: 5408fc295fa26b20d9c40c07b0520237004c5dfbde029002fb9506751a5d3340