Malicious PDF — malware analysis report

Static analysis result for SHA-256 37947eb9979b2890…

MALICIOUS

PDF

66.6 KB Created: 2020-11-14 14:22:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: eae6a1343326ef96045f571b94543373 SHA-1: 59f3d70bd37cc457ca2e247388ea9e3cddfd06ec SHA-256: 37947eb9979b2890f48ddb3c5948aa42ce32439737fb3ba593d29828d26f8699
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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/strik?utm_term=financial+management+theory+and+prac PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371248/normal_5f8d5c99e2a93.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375358/normal_5f99c52836c44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5fa9200bbba5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378613/normal_5f9463967aa98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391624/normal_5fa8800e1d50d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478141/normal_5fa97f1523d21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444358/normal_5fad98a6cdc3d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f8a072c9a70c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373985/normal_5f95c12295e54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386361/normal_5f94faaa809b3.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/2dd5ac7f-b5d4-4d43-9b0b-53fd1d86f7a5/focusrite_saffire_6_usb_driver_windows_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c52b732-b4fd-46e3-9dde-9a638c7acc09/12955419630.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5b4ead9-6620-4861-a69f-250ae2e04fc0/17631972549.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_off0000c767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC767 5368 bytes
SHA-256: 1d0aa1fab649d9619bca36cc6fa2c29e3212090516724a99f9f2d9180f60110f
font_01_sfnt_off0000d980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD980 10616 bytes
SHA-256: 8083000b09f5ee538341320d80a367fc9e1f24caa520a60893685b1d580a4c01

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