Malicious PDF — malware analysis report

Static analysis result for SHA-256 234417846912ed09…

MALICIOUS

PDF

43.6 KB Created: 2020-08-21 01:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8df3cb476b73e4974da61f1c3a9427c9 SHA-1: 4fbfc21df946f9c893c6135d48e165adccf67fd2 SHA-256: 234417846912ed09dbffbb791ca030ff89201049141dac25cc9188b177081a2c
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, includes the URL https://ttraff.cc/pify?keyword=importance+of+report+writing+in+research+methodology, indicating a lure to a malicious site. The presence of numerous links to Shopify-hosted PDFs suggests an attempt to obscure the malicious redirector behind a large number of seemingly benign links.

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.cc/pify?keyword=importance+of+report+writing+in+research+methodology
    • http://files.bharatkemitra.com/uploads/1/3/0/9/130969075/neloleku.pdf
    • https://cdn.shopify.com/s/files/1/0454/0373/4184/files/40794559415.pdf
    • https://cdn.shopify.com/s/files/1/0435/7757/3539/files/how_to_make_commands_on_twitch.pdf
    • https://cdn.shopify.com/s/files/1/0433/7103/6822/files/xiroxoxukexiwulo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/60831910841.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/74572277897.pdf
    • https://cdn.shopify.com/s/files/1/0429/3859/7539/files/85740080236.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/84518108159.pdf
    • https://cdn.shopify.com/s/files/1/0435/6984/0283/files/kuzurop.pdf
    • https://cdn.shopify.com/s/files/1/0431/9484/3298/files/sekab.pdf
    • https://cdn.shopify.com/s/files/1/0429/9037/0975/files/security_camera_installation_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/1311/0951/files/bleacher_report_football_app.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_off00006ca0.bin
d16e965f7d31e5a1154715a4515813bf2a2efe142221b1896bc3d4847be7826a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CA0 5700 bytes
font_01_sfnt_off00007fe1.bin
e26f80dc5e51da4f1349ea101dd66689170d875460d0426f624174044aa0aee1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE1 9912 bytes

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