Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b4e48ba1794dbdc…

MALICIOUS

PDF

39.7 KB Created: 2020-08-30 10:42:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60259607eda65b9819cb20fdcf10def7 SHA-1: e4fa5b3d317c468422f9ca717499df8cd638b359 SHA-256: 1b4e48ba1794dbdce08b87f4d09560e4e9f03e1261600b092f7f59531825b275
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a 'PDF SEO Link Farm'. One of these links, 'https://ttraff.cc/wix?keyword=nier+automata+controller', points to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to this URL, suggesting it is the primary lure. The presence of a link farm indicates an attempt to distribute malicious content or conduct phishing operations.

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.cc/wix?keyword=nier+automata+controller
    • https://static.usrfiles.com/ugd/b8c837_a46e307927524d7b918de77948ad4da4.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_60933f45ddf94987949d523fd7c9a3ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_c190b3b27dab4bada50a12c720818191.pdf
    • https://static.usrfiles.com/ugd/3aee12_cd60f1897e7447139da58cca65912b02.pdf
    • https://static.usrfiles.com/ugd/cc10e7_10d58be1307e4b3bb0b4e96379a36919.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c0101b12be4433f90a782b02d807459.pdf
    • https://static.usrfiles.com/ugd/5d2cf3_68657c0358144438ac2c27db3044838b.pdf
    • https://static.usrfiles.com/ugd/2486b5_2d67ea1f282e415eaaff3420edd90d76.pdf
    • https://cdn.shopify.com/s/files/1/0435/4385/5258/files/52994049596.pdf
    • https://cdn.shopify.com/s/files/1/0430/9906/2421/files/15457908979.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/rental_application_form_michigan.pdf
    • https://cdn.shopify.com/s/files/1/0435/0309/1876/files/residential_lease_application.pdf
    • https://cdn.shopify.com/s/files/1/0432/0106/9220/files/shakira_waka_waka_mp3_indir.pdf
    • https://static.usrfiles.com/ugd/d775a9_8624bb7f64dc45db9cf8c80c46d7be1c.pdf
    • https://static.usrfiles.com/ugd/f1d680_185b08b5a51246e9959a36bf20be1fa4.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_off00005785.bin
1f87bee4d2b379c4c788a11997161e0bf57d88b3deecaae38e1f04b25c734746		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5785 4736 bytes
font_01_sfnt_off00006785.bin
b5f4645eec833c9e288ee3a864a640eab1f083053533df1fe03223ad7669bd14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6785 13376 bytes

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