Malicious PDF — malware analysis report

Static analysis result for SHA-256 93632e2b20532691…

MALICIOUS

PDF

69.8 KB Created: 2020-08-22 12:30:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 537d8f7385ca8c70c1a13d409b59825a SHA-1: a72120579e158e16686cfdc2b4b13ee63cb66d5b SHA-256: 93632e2b2053269108eaa20e9202247e3031d5845d2fc6711a23ab977ae96109
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content through a large number of seemingly benign links. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent.

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=android+studio+ndk+windows
    • http://files.sweetearthjewelry.com/uploads/1/3/1/4/131483097/7644913.pdf
    • http://files.allisonevansphd.com/uploads/1/3/1/3/131397973/daxefanijagarawejog.pdf
    • http://files.johnlalla.com/uploads/1/3/1/4/131453393/nefuxaxikozodiguza.pdf
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/sogoriji.pdf
    • https://cdn.shopify.com/s/files/1/0428/3373/9932/files/63231899247.pdf
    • https://cdn.shopify.com/s/files/1/0462/7084/0981/files/length_conversion_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/0609/9605/files/wejupilifojakesomabibeze.pdf
    • https://cdn.shopify.com/s/files/1/0434/1438/8892/files/82927062599.pdf
    • https://cdn.shopify.com/s/files/1/0433/6294/3144/files/71885580201.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0421/files/poruzix.pdf
    • https://cdn.shopify.com/s/files/1/0433/9607/1578/files/geverukemegefozeduze.pdf
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/cv_raman_effect.pdf
    • https://cdn.shopify.com/s/files/1/0431/6990/6852/files/bus_stop_full_marathi_movie.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_off0000cbeb.bin
3c6502e04658d985b37ed967139d4b1bb7136c1c8ff06868e6b64c17630b7d50		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCBEB 2960 bytes
font_01_sfnt_off0000d66e.bin
17b9ac3620ec7634feae6ceda6d4cc38257154a1eee8aaf7cd17eafc46696b9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD66E 4720 bytes
font_02_sfnt_off0000e69b.bin
f25e497973cb516a9628cbdabb9e15c9a625c2419758dddc293177b839bf7218		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE69B 10304 bytes

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