Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c210c5971e51cb…

MALICIOUS

PDF

60.5 KB Created: 2020-11-26 06:29:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: ad53e5c3614ad7781faf6e1273020e64 SHA-1: 17af6947654faf6c5cf01f6309808842a4fa51b1 SHA-256: 00c210c5971e51cbb3e0a299d68e69b4e5e93ae4966d727456020016f93fb7bb
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/123?utm_term=looq+selfie+stick'. This indicates the document's primary purpose is to lure the user to this malicious site. The ML classifier and ClamAV detection further support the malicious nature of the file, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/123?utm_term=looq+selfie+stick In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368477/normal_5f8a10b55c365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373520/normal_5f91b60b7af7f.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/9cf89a45-47be-49cc-ba28-24d87991826e/pit_and_the_pendulum_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2502c5d-84ba-41a1-9dde-baa784e7d646/anime_aishen_qiaokeli-_ing_sub_indo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72c512c7-7ec7-4b0c-aa40-c23489d984b3/xezokotefopulagepezemuja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5d344d1-a80c-44a2-a7e5-8839a1df229b/zobunot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec42c481-0c10-40ab-acff-d4ee1d99f7a2/fegilenufibosijibopepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4b55482-d093-467d-a6e5-128ce0fb3dda/futibaralulep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13224643-176f-4a94-ab66-6c55c6f47c8e/damien_cartron_biographie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68e7d2d3-0630-4fd6-af55-93a566ca269e/rean_schwarzer_tachi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89497124-ca4e-4b76-b72f-5183e3f4f78b/fedex_line_haul.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_off0000b1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB1E2 4700 bytes
SHA-256: 58ba314152e4d71894e8e4b97c666c6a1381c3d82af625f27a5f0f490d917e18
font_01_sfnt_off0000c20c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC20C 10444 bytes
SHA-256: 6c4ff3003432861f3ac2797f1d3d5b3b6e673e1ceea33d47d871563d1632248d

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