Malicious PDF — malware analysis report

Static analysis result for SHA-256 8747d44f0edf9aa8…

MALICIOUS

PDF

44.6 KB Created: 2020-08-28 02:09:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a2bff7eee475f9d1f7b4cc03fc3bf86 SHA-1: efae688230ca2d65845952a1acca0503ef621fb1 SHA-256: 8747d44f0edf9aa8e096bbe7e56935fa63fa5058831f273960b4bb69e27d6b56
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a redirect to known malicious infrastructure at 'https://ttraff.ru/pify?keyword=la+stanza+del+vescovo+torrent'. Another critical heuristic identified a PDF link farm, suggesting an attempt to manipulate search engine results or distribute content widely. The ML classifier strongly supports the malicious classification. No scripts were extracted, but the presence of malicious redirectors and link farms indicates a likely phishing or malware distribution attempt.

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.ru/pify?keyword=la+stanza+del+vescovo+torrent
    • http://files.jjamtech.com/uploads/1/3/1/6/131636692/ketusikowe-xetodila-xavapilibu-kazadutuvofu.pdf
    • http://files.zstitchdesigns.com/uploads/1/3/0/8/130874671/6e6575f3a9c0c34.pdf
    • http://files.philipwattsinteriors.com/uploads/1/3/1/4/131437423/bifin-wudipasuti-mujur-kejabufis.pdf
    • https://cdn.shopify.com/s/files/1/0433/2394/9224/files/74746804921.pdf
    • https://cdn.shopify.com/s/files/1/0430/5649/6794/files/jesofatejusu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7299/4971/files/karcher_fc5_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0440/4982/5942/files/tojaragorulukusix.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/66064107319.pdf
    • https://cdn.shopify.com/s/files/1/0428/5317/1356/files/bupovozefukunune.pdf
    • https://cdn.shopify.com/s/files/1/0433/0432/1184/files/vanizipudi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.pdf
    • https://cdn.shopify.com/s/files/1/0429/6556/5589/files/89211225448.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000642c.bin
2c11e266be419649ec7cb53ccfc0e21bccbf31e497cba22bab47165508302743		 pdf-font-stream PDF embedded font (sfnt) at offset 0x642C 4984 bytes
font_01_sfnt_off00007532.bin
47317cf6c703a15f1e4da24961e6c99c9abef5971c418a93f665a44f050cd441		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7532 15416 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.