Malicious PDF — malware analysis report

Static analysis result for SHA-256 80cbc66bbcb861b8…

MALICIOUS

PDF

76.8 KB Created: 2020-11-20 08:06:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c80cab7371bad0e3e1ea2aa173c6f62f SHA-1: 920696e9e12aaf369c3e9ece5551d0aa7ae8c7de SHA-256: 80cbc66bbcb861b80f3980e355d85595d2285a50d6193ef7e787d5cc0ba79d8d
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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/aws?utm_term=define+osha+reportable+incident PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489587/normal_5fb2b0760572b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393635/normal_5fb74921ec784.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f8e947109d89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375509/normal_5f90f041ab316.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388048/normal_5f94c3963a3ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470826/normal_5fb45a08ef43d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388038/normal_5f9d13e397af3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vavabi/98775862317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e5b0c25-4d0a-40dd-a9d4-b3fc098d9515/final_fantasy_ultimania_archive_volume_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31c729ac-f087-440d-b1ca-099d1f93366a/walmart_custom_cake_order.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ded892c-86ff-40bb-a20b-153e6a33cef2/igreja_quadrangular_missionaria_adri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fe7d8a1-2af4-4e60-90c8-8c2bdb11ef05/accounting_technician_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c24d6bbf-8ac7-4094-b1a1-b67e2125f89f/swann_security_camera_installation_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37ecc47e-7bdd-4381-a3f0-a714ccf66c6e/48405572316.pdfIn PDF document text
    • https://s3.amazonaws.com/xajowu/sideload_launcher_2_apk_download.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e308.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE308 5172 bytes
SHA-256: f64544116dfa4ed4c185dddc0a3bdcf0d87416f110bfeb7b28ff9a9d2b944740
font_01_sfnt_off0000f493.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF493 10388 bytes
SHA-256: 68c0e2c8e22efac1b371457a0d424dff4c5fef940c801d73f8bea66f43263227
font_02_sfnt_off00011825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11825 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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