Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d9d4a1a7c9679d9…

MALICIOUS

PDF

53.6 KB Created: 2020-08-03 17:18:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e67799d876be787578878468ddf4d1d SHA-1: 723cfa8e3da2a385c6a571be5dd0415cf3e86e6d SHA-256: 9d9d4a1a7c9679d9bfa10b91d845d35d9b5205227d51d5c0cea36284f7cefabd
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically identified as a malicious redirector pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to a book and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of a link farm heuristic further supports the malicious intent of distributing links.

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.com/pify?keyword=capablanca+endgame+book+pdf
    • http://files.oxfordmomsandtots.com/uploads/1/3/0/7/130739883/24b0f7.pdf
    • http://files.jamesbrearley.com/uploads/1/3/1/4/131406403/kojilitobu.pdf
    • http://files.ryladistrict7255.com/uploads/1/3/1/4/131406840/b33ea21b27.pdf
    • http://files.fortlive.com/uploads/1/3/1/4/131438464/102399.pdf
    • http://furalubi.mattclifforddesigns.com/uploads/1/3/2/6/132695492/504edee33b.pdf
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/13975664836.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mufowotipopugisafe.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/40844214560.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/zulagozuvatedatenifuzazuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/0883/5234/files/62057596115.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7313/files/46156724346.pdf
    • https://cdn.shopify.com/s/files/1/0428/5431/8239/files/timothy_bradley_net_worth.pdf
    • https://cdn.shopify.com/s/files/1/0431/0944/9884/files/81617071207.pdf
    • https://cdn.shopify.com/s/files/1/0430/3149/4810/files/rarubejevijisimimu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1805/7885/files/busexolawopiluzezikoxif.pdf
    • https://cdn.shopify.com/s/files/1/0428/9822/7353/files/45911348602.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/pagonaxanatimapetukef.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_off0000951a.bin
6aa6c01b1cb112dcde36a4ff70609a5f18acf59c2323100f9cf4256a097fc07e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x951A 5308 bytes
font_01_sfnt_off0000a71a.bin
2c21193bb288c11cafc61d54cc39f972b8522d4dfd2dc0054701299966daf9d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA71A 10088 bytes

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