Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e3d3d1ee5917fef…

MALICIOUS

PDF

35.6 KB Created: 2020-11-05 08:39:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfdc27d488cdba49c5a7691ab262c4fe SHA-1: d32469b494c722f7914baca7134be45357a25624 SHA-256: 1e3d3d1ee5917fef5b465ddb5078e6e4cb4c7af887bc31e923aa711c71a02161
94 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The embedded URL, https://gettraff.ru/strik?keyword=plate+tectonics+crossword+puzzle+key, is the primary indicator of this malicious activity. While no scripts were explicitly extracted, the PDF structure and the presence of embedded URLs suggest an attempt to lure the user to a malicious 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://gettraff.ru/strik?keyword=plate+tectonics+crossword+puzzle+key
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/wafovupodenelinu.pdf
    • https://cdn-cms.f-static.net/uploads/4388279/normal_5f8f4af62c35c.pdf
    • https://cdn-cms.f-static.net/uploads/4425504/normal_5fa214b821828.pdf
    • https://cdn-cms.f-static.net/uploads/4369793/normal_5f87da4167d9f.pdf
    • https://cdn-cms.f-static.net/uploads/4408004/normal_5fa258df1c8ad.pdf
    • https://cdn-cms.f-static.net/uploads/4369936/normal_5f9d0c4f11da4.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e5301a04-f464-4567-b38f-7783bfaf2c85/efectos_de_los_actos_de_comercio.pdf
    • https://uploads.strikinglycdn.com/files/fe125020-3fea-4efb-ba66-5ad1ecf24cdf/77908088624.pdf
    • https://uploads.strikinglycdn.com/files/7eddbaeb-8b68-4714-be81-454512d064e1/toshiba_laptop_battery_pa3817u_1brs_price_in_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0501/9412/0885/files/xijatutet.pdf
    • https://cdn.shopify.com/s/files/1/0497/5994/4865/files/le_gone_du_chaaba.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004eb5.bin
82f9387ddfc1fe5e58c8348ee6c5eaad5d7e90b133ea3452c7184c5c5342ab3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4EB5 5376 bytes
font_01_sfnt_off0000612d.bin
ab201d96e77a4a55d618ed0fe5276ef08ab68c14d651e845ec57c15f76b370db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612D 9564 bytes

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