Malicious PDF — malware analysis report

Static analysis result for SHA-256 b88b402fdb5530f0…

MALICIOUS

PDF

45.0 KB Created: 2020-08-31 18:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5013fc25388b3bcd5828e8ef53403488 SHA-1: ba6cc6dd239911a2a9ab54568dbccaa1079b47cb SHA-256: b88b402fdb5530f08c67a6bf9c914e51ac35c6f015bd11ceb52635fa3e37d064
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body contains the URL that is likely intended to lure the user into clicking on it.

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=online+scoreboard+free+no
    • https://cdn.shopify.com/s/files/1/0428/8793/8211/files/62288798296.pdf
    • https://cdn.shopify.com/s/files/1/0432/8800/2710/files/march_april_2020_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0434/4555/1256/files/what_is_bearing_capacity_of_soil.pdf
    • https://cdn.shopify.com/s/files/1/0436/1800/9251/files/clinical_pharmacology_laurence_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6173/0719/files/60205777103.pdf
    • https://static.usrfiles.com/ugd/22bf55_f0e1a312c56b4a2d90a48180f794fca3.pdf
    • https://static.usrfiles.com/ugd/b8c837_72cc9411a6e04e4992ef968791678a7a.pdf
    • https://static.usrfiles.com/ugd/26481d_eaebd3fddcfb4fdaa4c30ed1b9947280.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_3184db4243464b1ea858202ae526e948.pdf
    • https://cdn.shopify.com/s/files/1/0430/5082/7929/files/jibafekoboze.pdf
    • https://cdn.shopify.com/s/files/1/0440/6378/5112/files/gigurumewazawimemafitepas.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/wheel_of_life_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/7356/7901/files/pch_games_online_eggz.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_off000065fa.bin
d251166eb2951047f9d01a1454fe6d5638d2ebe381dacd857b2ceef9b9f2d5b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FA 5184 bytes
font_01_sfnt_off0000779a.bin
7c8abd63152de1de1cf79917bc31954a53e4285be5ef2df8ffe1be8ebea71048		 pdf-font-stream PDF embedded font (sfnt) at offset 0x779A 3128 bytes
font_02_sfnt_off00008445.bin
af46697a208fa8144a4a57577ab72cf529f84d301b006a7030acca0f4bdd34ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8445 10376 bytes

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