Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cad12cf23112689…

MALICIOUS

PDF

48.6 KB Created: 2020-09-11 17:39:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ab5a0da4a02add760226b93e45a4004 SHA-1: 97e4fb0b4456558d5a99be646b19bd33d3d2211a SHA-256: 1cad12cf23112689d2be349e2f414792cacc536a0d78a98816fad9b56eec5c5a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.me/wix?keyword=online+electricity+billing+system+project+pdf'. This URL is embedded within the document body, suggesting a social engineering attempt to trick the user into clicking it. The presence of numerous other external PDF links, many hosted on Shopify, further indicates a link farm strategy. No scripts were extracted, and the document body is heavily obfuscated, but the primary intent appears to be redirection to a malicious site.

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.me/wix?keyword=online+electricity+billing+system+project+pdf
    • http://files.cydwoq-ny.com/uploads/1/3/0/8/130873758/288427.pdf
    • http://files.sherimacardy.com/uploads/1/3/1/0/131071137/kepug_mosikaxezu_bidetu_wufonukemu.pdf
    • https://static.usrfiles.com/ugd/c3548c_344cf371848b4acd9401657388ebc763.pdf
    • https://static.usrfiles.com/ugd/63f22d_048f56ce29884dab89ca42e00e1f24d5.pdf
    • https://static.usrfiles.com/ugd/fafc38_91bfc702f0a34ebea2627c10720dc60c.pdf
    • https://static.usrfiles.com/ugd/764aaa_109ed81ba4f84e1cb19310405ab476d5.pdf
    • https://static.usrfiles.com/ugd/704f6c_7bd90b2f6b4e4fe89dd59112f0c09a66.pdf
    • https://cdn.shopify.com/s/files/1/0438/4607/4525/files/zoxikapipovofur.pdf
    • https://cdn.shopify.com/s/files/1/0434/5374/3270/files/cg_new_holi_song_2019.pdf
    • https://cdn.shopify.com/s/files/1/0439/6895/4526/files/1774033595.pdf
    • https://cdn.shopify.com/s/files/1/0434/2684/0738/files/mafegizonadozirivekudap.pdf
    • https://cdn.shopify.com/s/files/1/0428/8105/6931/files/athanasius_on_the_incarnation_summary.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/california_physical_science_textbook_8th_grade.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zadolodiwifunum.pdf
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/62826678087.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_off00007e22.bin
4e22aa8cd8bdfd81babdea8709543655c903d7ad6965f23873e9c899d59e9f43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E22 5612 bytes
font_01_sfnt_off00009130.bin
8278ab41e228312ec34de9e758381b642120908fdad383083dafae2be546257e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9130 10524 bytes

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