Malicious PDF — malware analysis report

Static analysis result for SHA-256 485f1005942e7f8c…

MALICIOUS

PDF

36.1 KB Created: 2020-08-31 19:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69ad4eca0734c2dbbe25c31e04573475 SHA-1: f20d43543dfcd8a58d65032590503b92fb0ef1b9 SHA-256: 485f1005942e7f8c344e88d28a28fa4fc52bd616b56d0e006cfbcf19f4f1d860
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one heuristic specifically identifying a malicious redirector. The document body, though heavily obfuscated, contains text related to 'vanilla ice cream song sheet music' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning or distributing malicious content.

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.ru/pify?keyword=vanilla+ice+cream+song+sheet+music
    • https://cdn.shopify.com/s/files/1/0434/6904/5926/files/pasar_de_a_word_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0439/2553/6936/files/lakixeritafixuwape.pdf
    • https://cdn.shopify.com/s/files/1/0430/6262/4405/files/zevojifolamulenut.pdf
    • https://static.usrfiles.com/ugd/738632_d6cd6380d6e54b358831a413685e6a65.pdf
    • https://static.usrfiles.com/ugd/c6ac46_01c3eee149194491a8cd271b984d7eed.pdf
    • https://static.usrfiles.com/ugd/91e123_8bcda58d8d764dd08312da893efa8a25.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_d4ea23af779f4bea80ed509e71161f52.pdf
    • https://static.usrfiles.com/ugd/271e65_93adfcdbf71d4852a11dc788b2ab013c.pdf
    • https://static.usrfiles.com/ugd/9904c2_2fbff02bf4434089b30ab4071d481c3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_7492fa46f0884664b73071ecbe1ce725.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fcee2258a4d418ea635d4094cd36c73.pdf
    • https://static.usrfiles.com/ugd/b8c837_0914cf91d1d74eb097ffca1d1712fcdc.pdf
    • https://static.usrfiles.com/ugd/a18aa6_26f41e8387d44b0e944ac05c01232bfb.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_off00004fb9.bin
dc89e805866976301f977495f1e09f3c3ca6d5829bb6f8bb416771271fd5c4b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4FB9 5180 bytes
font_01_sfnt_off0000612c.bin
22d292ffa2edb2f8fa3717c2af2982c2992f54aba7cc2277076fe3f1c5a1eade		 pdf-font-stream PDF embedded font (sfnt) at offset 0x612C 10128 bytes

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