Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea84ed4fa0d31858…

MALICIOUS

PDF

38.7 KB Created: 2020-10-26 20:20:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 79960753f2dd66020b59f982ff020711 SHA-1: d8909117a6d9413ae4c0cb2ad76649e9294f6734 SHA-256: ea84ed4fa0d31858c412050702626420225a86d7913c1a05898c1e703685522c
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to known malicious redirector infrastructure, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/123?keyword=unblocked+tennis+heads', which is flagged as malicious. This suggests the primary goal is to redirect users to a harmful site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ttraff.com/123?keyword=unblocked+tennis+heads In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372673/normal_5f8d59a335281.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382773/normal_5f926a14705f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379719/normal_5f8f655543d92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f8e780a4cdf2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f91c7edf20cb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kovilowab/pukivamutig.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/chuyn_hnh_nh_t_sang_word.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/56172778905.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/9231305288.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29e075fe-2078-415b-a4f5-0729a393d0e0/11266412022.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/581b4cfe-d669-4e39-a182-be170c7fa49a/gefarisemago.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a29ed829-4527-4b5d-aaeb-597103c9a7f5/sixadususorisapov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19eb1e67-a49e-4960-bf41-e1346658c530/99061502466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5389978a-2ef7-4930-93a5-3d5ac9c47f8d/88805727576.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b212276-8145-48c6-be94-3c20d11f4039/26193694272.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f31940a-608b-485f-b1f3-855a37c86ec5/75657253604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcc443b3-8eb7-4a58-848e-f0d86dc5ad08/25687094033.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4f85599-ce77-4da9-80b4-61f024c041f2/cradle_to_cradle.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/45645091297.pdfIn PDF document text
    • https://s3.amazonaws.com/nowokil/zolemesilafonimozadar.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/nitimijowipedawemom.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

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58CE 5128 bytes
SHA-256: 9add7404eb19a9927de518b41b7b08086cdeb4c6a900de38d20ce04c3837f4e4
font_01_sfnt_off00006a31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A31 10448 bytes
SHA-256: 7413befb92e2483c9872109e1108b64f0688f25dbe027342ebee245108ebd285

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