Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ec037f563effdc…

MALICIOUS

PDF

76.6 KB Created: 2020-11-25 22:40:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ab3663dcce7de42bfef0a69e7a94e4f9 SHA-1: 9df09b771768f1c9913949cc56187e4ac521efd3 SHA-256: f6ec037f563effdc7ab0bd28c767ed191bff00f49f812750b6c09594dd433c78
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://trafffi.ru/123?utm_term=the+falling+sky+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450625/normal_5fb5867a1bdf1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474727/normal_5faa7a39337df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377102/normal_5f9fa756b9632.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403938/normal_5f9b745b02eab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502563/normal_5fbea24e1ef73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482002/normal_5fb4bfd44503c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475875/normal_5fabef0b41ba2.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/f5035921-6811-413c-a2bd-79397ba4cea5/levodetebelavumatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47771ae2-8156-4fcc-bc74-9d8fe9e56c62/the_connor_project_film.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6928c971-7a2b-45ff-9531-e4922676bfad/1185979026.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_off0000f152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF152 5324 bytes
SHA-256: cb5218f532c50eeaca967d65112bdd6e73361576f3b491ad81409df00b1d0f8c
font_01_sfnt_off0001037d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1037D 10260 bytes
SHA-256: 6b0d5b40683d4474140725f48eb1d7d9f4afda111caeb6f7e73cadc790c9b069