Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9692b64f5004303…

MALICIOUS

PDF

49.4 KB Created: 2020-08-20 15:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a50b9091dfc3a79fc3128d9da8b79e76 SHA-1: 41c53286d2d6c1faf196bb21d90de470c4c5f221 SHA-256: b9692b64f5004303e3bf2c1da8a2e537d50908b3ba5bf9533534588711e3bf00
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=abhimanyu+tamil+full+movie'. This indicates a likely attempt to lure users to a malicious site. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute malicious content. The ML classifier strongly supports the malicious nature of the PDF.

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=abhimanyu+tamil+full+movie
    • http://files.bajadaconstruction.com/uploads/1/3/0/7/130738554/64cac8820cb.pdf
    • http://files.honeymaice.com/uploads/1/3/0/7/130775126/birubupugoxa.pdf
    • http://files.bellasandfellas.us/uploads/1/3/1/6/131606465/zukimodiza_fizoziniguf_jarupevowipon_wazixewevi.pdf
    • http://files.savoyfoundation-usa.org/uploads/1/3/1/3/131379719/subiza.pdf
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/luworimelupiwoxaketufapi.pdf
    • https://cdn.shopify.com/s/files/1/0441/3915/1512/files/89720088941.pdf
    • https://cdn.shopify.com/s/files/1/0430/9804/6621/files/42394589048.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/autocad_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2089/3864/files/zx_spectrum_basic_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/reragijod.pdf
    • https://cdn.shopify.com/s/files/1/0450/0389/9048/files/liwesoxodefozibeviko.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vunumegosuvuvorewufo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7863/8999/files/cyanobacteria_book.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e61.bin
49078ba1351d4b62cc1f4ea7a23457c757458f4408e787d791a013158344acc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E61 5024 bytes
font_01_sfnt_off00007f66.bin
5f810895f7f4920c115d5247f8415d41450396e24854ea24e62bb927d62bb97f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F66 8116 bytes
font_02_sfnt_off00009556.bin
47e2bbcf3f67d97cbfbdb23b76354b4b78a3d2e7ba25fba44c770f4a0b990533		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9556 10204 bytes

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