Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e914cdf25dc0dad…

MALICIOUS

PDF

45.2 KB Created: 2020-08-08 17:47:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e63897d588b6ea46143737ad60dca39 SHA-1: 7c30d3ea1af3402e4a2bf4358ff5f7814ace6be2 SHA-256: 3e914cdf25dc0dade1853f458cd733f504bb02214d5e5389bc47e70fa31b9f06
120 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, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and numerous other links to Shopify domains, suggesting a link farm or redirection strategy. The primary intent appears to be directing the user to malicious infrastructure via the 'ttraff.ru' URL, likely for further exploitation or phishing.

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=acids+bases+and+salts+pdf
    • http://nodube.hinsdalesouthathleticclub.org/uploads/1/3/2/3/132302872/mopesipoja_bubigepapepowov.pdf
    • http://vusux.unityumc.org/uploads/1/3/1/6/131637881/vujuxavan.pdf
    • http://sugogifiv.dandylifenutrition.com/uploads/1/3/0/8/130873995/d2e28d620587a1.pdf
    • http://files.northbeamfinancial.com/uploads/1/3/1/4/131453188/e7c3ffb34.pdf
    • http://files.pnwbees.com/uploads/1/3/1/1/131164424/gulobiserak.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/18309989433.pdf
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/62723733382.pdf
    • https://cdn.shopify.com/s/files/1/0434/1301/2637/files/18066193870.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/setting_up_act.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/xebofimukinenetek.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/71975011765.pdf
    • https://cdn.shopify.com/s/files/1/0435/5883/0231/files/area_of_circle_by_integration.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7475/files/79769851235.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/45053298485.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/how_to_draw_a_worm.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/darovasimutogoka.pdf
    • https://cdn.shopify.com/s/files/1/0436/9163/8934/files/wilok.pdf
    • https://cdn.shopify.com/s/files/1/0431/6974/2999/files/zejevezebifi.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_off00007235.bin
25ad960818b14d13a20f3d2e914ba788abe480265446d3e4cf3ad50e4337d1e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7235 5184 bytes
font_01_sfnt_off000083ea.bin
99cf4c219ce1fc5b2c931823914442e1d6d779b3476dad03c495c74303a9ffe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83EA 10448 bytes

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