Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c3a3d953505ff2d…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 19:51:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 451f688a452fd861698b7d9ce8303be6 SHA-1: ae6a50c6a434121c7cfd3c26ee05c41e90a5d340 SHA-256: 8c3a3d953505ff2dab7eb662681fec6790e4c3eda1c7e82ae92c65945ef7429b
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with one critical heuristic identifying it as a malicious redirector. The document body, though heavily obfuscated, contains a URL that points to a redirector service. This suggests the primary purpose is to redirect the user to malicious content, likely for phishing or malware distribution.

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=ukulele+capo+chart+pdf
    • http://files.vocarsonchurch.com/uploads/1/3/1/4/131437859/bujajonimodi.pdf
    • http://files.lovebudskincare.com/uploads/1/3/0/9/130969458/34ac27c73.pdf
    • http://zalamef.youngoakmorgan.com/uploads/1/3/0/7/130776225/4364145.pdf
    • http://files.aceinthehand.com/uploads/1/3/0/7/130776542/4bce10dc.pdf
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/pewolafiwibamafido.pdf
    • https://cdn.shopify.com/s/files/1/0431/3972/7509/files/dutadusavidovolisi.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/girezopamoziladoxuwilox.pdf
    • https://cdn.shopify.com/s/files/1/0437/7490/2423/files/emotional_abuse_in_marriage.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/amortization_example.pdf
    • https://cdn.shopify.com/s/files/1/0436/8737/9094/files/53770337732.pdf
    • https://cdn.shopify.com/s/files/1/0431/8245/7000/files/74499021422.pdf
    • https://cdn.shopify.com/s/files/1/0438/6432/6309/files/dupoganuzupupizuso.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6344/files/emuparadise_workaround_script_not_working.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_off000062ef.bin
1f899a8eb1c16465ee5bae5a4586e002f72cf8b3578381968de2b44adef20c17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62EF 5120 bytes
font_01_sfnt_off00007453.bin
d3a32a3069117dc0a95b90e06f36b7bb15e609fc491999d26d38a4c39d11e47b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7453 10632 bytes

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