Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6a01887ccaf3c50…

MALICIOUS

PDF

76.8 KB Created: 2021-01-05 19:34:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6b02cb772c942eb4c0353c3df086bdce SHA-1: 34996ec2294fdbe3a65c1f0412b76e66d6e6be9a SHA-256: e6a01887ccaf3c50e5bcb91f8117484ef585df2d21293885fd8c733199404bc5
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-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://traffmen.ru/aws?utm_term=happy+birthday+gift+hd+photo In PDF document text
    • https://cdn-cms.f-static.net/uploads/4492529/normal_5fad59082d54c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453115/normal_5fa9d36dad757.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488555/normal_5feb9a9d53765.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_5fd847c664e6a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378845/normal_5f8fa793a5e9e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393181/normal_5fb8544fac819.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402000/normal_5f9ad6fe67337.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420431/normal_5fd2270927a82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445750/normal_5fe004942a740.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/21568ba7-4921-41e0-886c-4d5e8f57d2b4/towilobitakuke.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/78463749062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fbfdf5a-dbdc-4e08-9e6a-f6350d9b7a19/shareit_android_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4c83804-b491-4dd1-bc87-ceb943518f04/paul_mitchell_flat_iron_spray.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5e33da2-1cf6-43ac-945a-793601a848fe/52553090921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13d83dae-fcad-42e8-8084-1176a3c68cf8/ornament_storage_box_cardboard.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_off0000f0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0D0 5296 bytes
SHA-256: c8713e9de85970595cfbb681e9b2f779066418804c199d4a89eb9a71402f66e1
font_01_sfnt_off000102d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D2 10656 bytes
SHA-256: f910ae116429cbe47ee1d9163c9d290f61dc4112f60cc27fe8ff27e5a57b5e71

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