Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1f93bdcbd34a7df…

MALICIOUS

PDF

64.9 KB Created: 2020-12-21 02:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dcc9b109d1dc4b42b4cddd2de45e7919 SHA-1: 1101feedfbe6debbfe9147ce012a791901d71031 SHA-256: e1f93bdcbd34a7df40f46e67ca93840dc839fcbf01580986059ff9566e3ba16e
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 0.9995

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://traffking.ru/strik?utm_term=helicopter+mom+quotes PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365601/normal_5f871152abc89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465142/normal_5fd79c1910b90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380237/normal_5fa6b21c5bc6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419849/normal_5fdc0ab4a26ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393026/normal_5fbd2da84dfba.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/66ba4a33-3554-40a8-8c6c-2b2eeb41eb6b/88797685790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2cd1949-4f76-4045-a634-f7d4cd3cb5fb/90026522875.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d38234a1-8d06-4bdb-b3ba-e2d974457176/steam_wallet_generator_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e8153fa-4aed-4644-8e0b-48061b40b00d/vevonogifisozerapobe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c606ad3f-15da-44e4-a4e6-ea7bc3076433/80636254302.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_off0000c298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC298 4956 bytes
SHA-256: 9f91ace13eb93f384c340dd6bc874635829308247e369c29a9d3523cddce1831
font_01_sfnt_off0000d35f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD35F 10620 bytes
SHA-256: f15c740e60271d44fd1c0d1f8270a0c504454f8b7e0bece84241ffd8fc3e0084

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