Malicious PDF — malware analysis report

Static analysis result for SHA-256 62bb7c2f57a99327…

MALICIOUS

PDF

76.5 KB Created: 2020-11-13 22:31:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c0bc17a903b63945b90684784457ab69 SHA-1: 2064e5305505985ffaff4158cc5a529bbd996e2d SHA-256: 62bb7c2f57a99327cf746916c6c2c47eb7b238dad352fbcd04b55a1c5bf3413e
96 Risk Score

Malware Insights

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

The file is a PDF document detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'trafftec.ru', which is likely used to deliver a secondary payload or conduct phishing. The document body, though heavily obfuscated, appears to contain keywords related to car specifications, suggesting a lure to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=2013+mustang+gt+specs+1%252F4+mile PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409395/normal_5fa18c33ac44c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370777/normal_5faaa41d3d160.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f873396b04bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370054/normal_5f9e5db935dad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465685/normal_5fac15405bd6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378607/normal_5f8ad1050e5ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505699/normal_5fada04e2d0d3.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/vidadaviwal/83780600002.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/google_account_recovery_options.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/bafg_formblatt_1_anlage_2.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/free_shrink_dvd_burning_software.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/24174624217.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/31275244068.pdfIn PDF document text
    • https://s3.amazonaws.com/ninazarila/kiwaj.pdfIn PDF document text
    • https://s3.amazonaws.com/dumupa/kujamima.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/new_laws_of_1542_apush.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_off0000ea3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3B 5676 bytes
SHA-256: 113d6af4edadf7f3a8dfec3b967f5532e2164603808c1e83e2f792894b72d908
font_01_sfnt_off0000fd95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD95 11616 bytes
SHA-256: 9b1856ca1bae475cf4f8fcf02f3a7873da6c8ac66252253155a7c284b902f14b