Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7a2893322b5f53b…

MALICIOUS

PDF

33.1 KB Created: 2020-08-30 15:12:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 621519b0cba405d43c52938ab4ed9514 SHA-1: aa79ae739fdbef4ceb1ecfa3d2364c08cb39661c SHA-256: a7a2893322b5f53bc6e3a4cfedc2c2a245fb292fdf154f348be2588db3b1b45b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'renegade racing unblocked games' and the malicious URL, suggesting a lure. Additionally, a large number of links to Shopify-hosted PDFs were found, indicating a potential SEO spam or link farm tactic to obscure the malicious destination. No scripts were extracted, and the primary malicious activity appears to be redirection via a 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.com/wix?keyword=renegade+racing+unblocked+games
    • https://cdn.shopify.com/s/files/1/0437/8879/6064/files/35440277717.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1578/files/glass_facade_design.pdf
    • https://cdn.shopify.com/s/files/1/0434/6842/3334/files/php_explode_function.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/lopidemoriduzor.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2103/files/33426802214.pdf
    • https://cdn.shopify.com/s/files/1/0428/1712/6567/files/99119297308.pdf
    • https://cdn.shopify.com/s/files/1/0437/1424/8857/files/22565921803.pdf
    • https://cdn.shopify.com/s/files/1/0428/7237/3411/files/neboburitezi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5036/8152/files/climatizador_cadence_505_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/8901/1612/files/media_query_breakpoints.pdf
    • https://static.usrfiles.com/ugd/b8c837_d22b7b1c7ebd4c4f93e4430c7519d839.pdf
    • https://static.usrfiles.com/ugd/822ecd_1e4a38f2e38445cca74952024aab663c.pdf
    • https://static.usrfiles.com/ugd/ea2f88_d0b62bdd87204ee096c5d0a331837669.pdf
    • https://static.usrfiles.com/ugd/99965f_cb2b634818fb41f6a5d1119df728598a.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_off000043f1.bin
480226c3c0c93427819ef730b6321e143ebd64fe7778d6934c36ab04cc9dd1c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43F1 5472 bytes
font_01_sfnt_off0000566a.bin
030c77512b9a2c6415640dddbe0f406ce918c86785f033f0c5ac19393c534111		 pdf-font-stream PDF embedded font (sfnt) at offset 0x566A 9800 bytes

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