Malicious PDF — malware analysis report

Static analysis result for SHA-256 613e2bab15e2531f…

MALICIOUS

PDF

86.3 KB Created: 2021-03-19 19:40:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 00b70395ab9c786582041a4450c6c272 SHA-1: 6d79cf699804dddf6c5d43f11def3f6a678ed72b SHA-256: 613e2bab15e2531f9d101e5320b41637fb2d79f44100b52a380ffcc36c0d4092
154 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 routes users through malicious redirector infrastructure. 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
  • 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://yafferge.ru/wix?keyword=tyson+percy+jackson+height In PDF document text
    • https://cdn-cms.f-static.net/uploads/4467955/normal_600e57145c35c.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/bissell_proheat_turbo_manualxu5mh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474231/normal_5fe92b9732689.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414336/normal_5fda80a298e80.pdfIn PDF document text
    • http://dk-inc.xyz/99869681604d9qdh.pdfIn PDF document text
    • http://50offstore.info/51781914732xiw05.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462066/normal_60146a69ae4ce.pdfIn PDF document text
    • http://uscarins.info/50123905639nkmx9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377679/normal_5ff512cd1f9da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501231/normal_6022495438c67.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/8ae3c494-6110-4447-bec9-dbbf4d32188e/innova_3140b_firmware_update.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c7f087d-703d-49a4-8782-1df06b0a3afb/81727889587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f06faca4-444d-4f30-80f6-ab2e9e50ab27/book_of_the_sith.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c092066-65ea-464d-915f-28b9327e909b/80733921608.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5330148-d124-439e-a3bb-738a6d4e1e33/toro_ccr_2000_carburetor_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b0b360a-7457-4c0e-bd5b-42308c7b5b7a/20478862835.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_off00011040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11040 5356 bytes
SHA-256: 0c2c1c0189593bacf3dd3a2201bcafad52aabb3a450065b715b77d203e8e59bc
font_01_sfnt_off00012287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12287 13096 bytes
SHA-256: 18c5f62161aeb9c3e47746072a2c6ab3a0e6a401d06e96805f8da152940c6c4f

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