Malicious PDF — malware analysis report

Static analysis result for SHA-256 8223caa8b8e1f99e…

MALICIOUS

PDF

40.1 KB Created: 2020-08-01 14:10:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e0d025c0c4e0f55ce13a704904290f0 SHA-1: 7e1f15063714b5e450afc7ad41e0ebde21ae6098 SHA-256: 8223caa8b8e1f99efc7c2f85e5216fc6d479f35e44155caeb8f8d7405e623b10
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, specifically pointing to 'https://ttraff.ru/pify?keyword=blue+snowball+settings'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external PDF links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and several benign-looking Shopify URLs, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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=blue+snowball+settings
    • http://files.heavensgardenrestored.com/uploads/1/3/0/9/130969190/vijumitemuluvur-pogewa-pavovujefal.pdf
    • http://files.ecardsvs.com/uploads/1/3/1/3/131384777/32412e1.pdf
    • http://files.awakeningstaryoga.com/uploads/1/3/1/4/131454549/2874401.pdf
    • http://files.linemantrainer.com/uploads/1/3/1/3/131381612/wojitu_kazubapi_ledokakikimol.pdf
    • https://cdn.shopify.com/s/files/1/0432/3147/7922/files/43943965177.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/litigupemaguw.pdf
    • https://cdn.shopify.com/s/files/1/0431/8406/2622/files/46992771878.pdf
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/maxuli.pdf
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/56084731650.pdf
    • https://cdn.shopify.com/s/files/1/0431/6227/1898/files/lebiratanoj.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/rojisip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xekugoxozeritazol.pdf
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/fadebilewunitelinodu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0006/2371/files/suwuzazidobun.pdf
    • https://cdn.shopify.com/s/files/1/0431/4490/4855/files/26601331491.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_off00005258.bin
71bfe4394c134618cfda93aef497746ec11fb1c7a92a9d8b00d4534fb328b72f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5258 4920 bytes
font_01_sfnt_off0000633f.bin
0df894d938aa733747c77aae79ffa013ad8d2e2ce0450fbda57f7025df3f68be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 10052 bytes
font_02_sfnt_off0000859c.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x859C 4324 bytes

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