Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cc93d7243ce1d0f…

MALICIOUS

PDF

32.0 KB Created: 2020-08-19 12:59:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfc8c0703756223d5ef77fc4e4d8dc3b SHA-1: b61d5a1c7d4716d6d76d62e0ec618f44172d6047 SHA-256: 3cc93d7243ce1d0f795b5078da220a5627d5736a4ebcab7509055fbba831483e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and references a popular song title, suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com', likely to improve search engine ranking and distribute malicious content. No scripts were extracted, but the primary intent appears to be redirecting the user to malicious infrastructure.

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.com/pify?keyword=brett+young+mercy+mp4
    • http://zolape.stamfordstarscheer.com/uploads/1/3/0/7/130739344/difakumowasup.pdf
    • http://files.dianegravel.com/uploads/1/3/1/6/131636745/nadavigazinanafe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4828/7912/files/atmega32_datasheet_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1222/7225/files/ponifufifunivoloronug.pdf
    • https://cdn.shopify.com/s/files/1/0438/0511/4528/files/administracion_de_recursos_humanos_chiavenato_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/buxidumex.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/zasirokuwujoxid.pdf
    • https://cdn.shopify.com/s/files/1/0431/3848/2337/files/nosukukixa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6558/9414/files/27956020640.pdf
    • https://cdn.shopify.com/s/files/1/0437/1510/0826/files/7929743181.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_off00004038.bin
0165b70d198065aa9f51e89b2d373e062b00a70fe74dc8666a7d1a451ae526d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4038 5072 bytes
font_01_sfnt_off0000517d.bin
b839591633df23ebe785ad3f1c3329056efdc60d0f7476ae245b468d14e19f62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x517D 10008 bytes

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