Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdea895a04578c91…

MALICIOUS

PDF

53.7 KB Created: 2020-08-03 17:45:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93c9efcde7dcb40526e08b8c9cf4d717 SHA-1: a7101d921bce3c0b324597d32eea8da6dcfc9518 SHA-256: fdea895a04578c91fa26dab0dbdde9ae8159ab290076b0cadeeb83875d2b8bc1
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL. This indicates a phishing or redirection attempt, likely to deliver a second-stage payload or lead the user to a malicious site. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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=calistenia+workout+pdf
    • http://dovawes.orangeandfawnrex.com/uploads/1/3/1/4/131452883/zuvarasukalulixag.pdf
    • http://files.splitdecisionimprovcomedy.com/uploads/1/3/1/6/131637150/5758565.pdf
    • http://files.victoriakileart.com/uploads/1/3/1/6/131607733/4872363.pdf
    • http://files.thegoddessloft.com/uploads/1/3/0/7/130775413/6c78387b009a3.pdf
    • http://files.holytrinityri.com/uploads/1/3/2/6/132695477/xuzazut.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6325/files/16680387257.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/vowogasunulubeviri.pdf
    • https://cdn.shopify.com/s/files/1/0431/7777/1162/files/44689211407.pdf
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/88537935895.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/lajun.pdf
    • https://cdn.shopify.com/s/files/1/0432/6221/4304/files/tijanasoraneporofuwuzana.pdf
    • https://cdn.shopify.com/s/files/1/0432/9983/1966/files/38211342033.pdf
    • https://cdn.shopify.com/s/files/1/0432/8092/4840/files/lasavofojitakubigexojaba.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/nanulekukojegiputajifi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/86060847569.pdf
    • https://cdn.shopify.com/s/files/1/0430/7556/7770/files/bufipevifolamefiwi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/57229916761.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_off00009500.bin
fd38b9a6743ba97e938487cdc7f026b14d2430d1121553d034ae597a970f2c4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9500 5096 bytes
font_01_sfnt_off0000a676.bin
4006edf8c3c8df4e49da5a9f9c0c7e56090e423d3b0364c4fe92fbeec465aa60		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA676 10312 bytes

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