Malicious PDF — malware analysis report

Static analysis result for SHA-256 50ee37d860379b79…

MALICIOUS

PDF

66.6 KB Created: 2020-08-05 04:49:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54b9f7b5c4c2b9867abc5bee68d198c6 SHA-1: e090f16f84e6d329eee51fa42b64d0446e6fcd63 SHA-256: 50ee37d860379b79efeab15f86cd1b18f00fb99eab3082a0077794ef387d9f3f
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The primary link, 'https://ttraff.ru/pify?keyword=nanotechnology+in+drug+delivery+system+pdf', is identified as a malicious redirector. Another embedded link points to a Shopify domain, which is also part of the link farm. The document body text is heavily obfuscated and appears to be junk data, but the presence of the malicious redirector and the link farm strongly suggests a phishing or malware distribution attempt.

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=nanotechnology+in+drug+delivery+system+pdf
    • http://files.glotanningandhair.com/uploads/1/3/1/4/131407494/6434896.pdf
    • http://files.gmcorpsuites.com/uploads/1/3/1/3/131383297/wuguzigekotoparujipe.pdf
    • http://files.naba-hairstreak.com/uploads/1/3/1/4/131482874/zijewak_zofetuvodawoleb_bewif.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/83457564286.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/devebezaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/4639/5304/files/fososibabim.pdf
    • https://cdn.shopify.com/s/files/1/0430/0469/0581/files/mozemiwadeweza.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/ralivobarirovujogu.pdf
    • https://cdn.shopify.com/s/files/1/0445/2777/9999/files/wings_of_fire_book_in_kannada.pdf
    • https://cdn.shopify.com/s/files/1/0433/5760/1943/files/43080258988.pdf
    • https://cdn.shopify.com/s/files/1/0432/9770/2046/files/21286880276.pdf
    • https://cdn.shopify.com/s/files/1/0433/3866/2053/files/fawurodedosa.pdf
    • https://cdn.shopify.com/s/files/1/0438/4194/5760/files/17445438756.pdf
    • https://cdn.shopify.com/s/files/1/0438/8729/6680/files/centrales_termoelctricas_de_biomasa_libro.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/geminavuwusejukala.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bobidaxida.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_off0000c1d5.bin
19515975684835a2d6793972df071c62ea8b1641d4e513f85a0897db73c03cdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1D5 5700 bytes
font_01_sfnt_off0000d523.bin
8a19a3f53fd4b6eaea5bd023a8cae3943abbd43ec6f05179a61e07ebbf749f89		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD523 12336 bytes

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