Malicious PDF — malware analysis report

Static analysis result for SHA-256 8736ce0696a351b3…

MALICIOUS

PDF

41.3 KB Created: 2020-08-01 01:39:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83274981b16000062fbdcac3f4cd9a37 SHA-1: 891910b7eae15d04f11eb8f7f09958e3f5043347 SHA-256: 8736ce0696a351b378162f8f0fcf273d589f8d3ba2d439fe94cdf5911446779b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=supreme+ruler+ultimate+cheats, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The file's purpose appears to be directing users to malicious infrastructure through a deceptive link.

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=supreme+ruler+ultimate+cheats
    • http://files.wiltshirehockey.co.uk/uploads/1/3/1/4/131453902/gejuxasakom-lufigomur-memeku.pdf
    • http://files.ryalphotography.com/uploads/1/3/0/7/130775528/4431512.pdf
    • http://files.fortykes.net/uploads/1/3/1/6/131606984/bilutumuz_tasevapijilem.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9588/files/65093857657.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/tusonikisod.pdf
    • https://cdn.shopify.com/s/files/1/0441/0369/6536/files/how_to_update_xbox_one_controller.pdf
    • https://cdn.shopify.com/s/files/1/0435/7577/1304/files/74951353750.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3496/files/91120053268.pdf
    • https://cdn.shopify.com/s/files/1/0428/1391/5303/files/vipumedunosizolube.pdf
    • https://cdn.shopify.com/s/files/1/0429/5560/4121/files/savezigebadurivolara.pdf
    • https://cdn.shopify.com/s/files/1/0431/7102/0957/files/97150083907.pdf
    • https://cdn.shopify.com/s/files/1/0431/5519/4011/files/66776626708.pdf
    • https://cdn.shopify.com/s/files/1/0427/9320/5916/files/19954011924.pdf
    • https://cdn.shopify.com/s/files/1/0433/8089/9989/files/rixusakuwemuvabudujoz.pdf
    • https://cdn.shopify.com/s/files/1/0434/3591/7464/files/66226363807.pdf
    • https://cdn.shopify.com/s/files/1/0430/7143/9001/files/63513606382.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/waratixamesixoduge.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_off00006178.bin
90afe675fabf18bf3107d374141c0a33200c6962136d6328198069044426c984		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6178 5276 bytes
font_01_sfnt_off00007338.bin
eebbe9166c34ee906163187599d0562b0648f02f3b935505985e7283425b3c37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7338 10392 bytes

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