Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5122b47d4d3beed…

MALICIOUS

PDF

47.6 KB Created: 2020-08-21 20:57:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 606c4897abf4c6602524039cc368d208 SHA-1: 63c29a349aa16fe5161b85abea384b3a36e42f98 SHA-256: b5122b47d4d3beed68714b83409af27260fdb08940bc139befc7baccb202b320
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=brutal+age+horde+invasion+mod'. This URL is embedded within the document body, suggesting a social engineering lure related to a game mod. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many of which are benign Shopify links, likely used to obscure the malicious redirector. The primary intent 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.cc/pify?keyword=brutal+age+horde+invasion+mod
    • http://files.ottawanavyleague.org/uploads/1/3/1/8/131856326/17e918.pdf
    • http://files.heekyoung.com/uploads/1/3/0/7/130739500/nemenimudivovudedok.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7248/files/76260776295.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/67372082840.pdf
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/12951006224.pdf
    • https://cdn.shopify.com/s/files/1/0437/2335/8358/files/merusejolewopesukure.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2158/files/rutofajirikedimatogej.pdf
    • https://cdn.shopify.com/s/files/1/0428/5366/2887/files/bennett_springs_fly_fishing_report.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32829552166.pdf
    • https://cdn.shopify.com/s/files/1/0433/5340/7646/files/xadawevef.pdf
    • https://cdn.shopify.com/s/files/1/0437/3810/3962/files/31706789656.pdf
    • https://cdn.shopify.com/s/files/1/0431/8950/2110/files/97024730594.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_off00006390.bin
1fefcd6209942230c22ddf24ede897d90e9be34ee8c0083252afee6752798ef9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6390 5348 bytes
font_01_sfnt_off00007595.bin
fce1bb7e8d93e61a58241af80c9940418f10599993b0c465050dc5567aaba011		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7595 11996 bytes
font_02_sfnt_off00009ca1.bin
9ffc405fbed68b1ed35cf25504b2a045b5802e2074cf99e6920a228075e829fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA1 16160 bytes

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