Malicious PDF — malware analysis report

Static analysis result for SHA-256 d429f91ba66ee4b6…

MALICIOUS

PDF

45.1 KB Created: 2020-08-31 00:29:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fafb1a4ac6b9a38a7cd668aeb45bc83 SHA-1: addd4689c22005d4a260b4e3cd982917b0e31e42 SHA-256: d429f91ba66ee4b6a81ffc917ad951364cf9438c1952a521013bcdd5af4eedd5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same suspicious URL, indicating an intent to direct the user to malicious infrastructure. No scripts were extracted from this sample.

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=activity+1.+1.+2+simple+machines
    • https://static.usrfiles.com/ugd/5b9a87_ddeb2d916cee420c89d3b92682d5918f.pdf
    • https://static.usrfiles.com/ugd/8acad3_c0d3ad3f6e2c41a8852e68c2ef874a5b.pdf
    • https://static.usrfiles.com/ugd/b8c837_08e45de8b96645c083bf5be921063285.pdf
    • https://static.usrfiles.com/ugd/b8c837_bf52e3c9035c4fc5ba97cdc78f330aad.pdf
    • https://static.usrfiles.com/ugd/87b9a8_9078d88ed9b14075aabbe401d06e526f.pdf
    • https://static.usrfiles.com/ugd/b8c837_de70664321e94bd5ae1b2183916fa764.pdf
    • https://static.usrfiles.com/ugd/6cf392_957772af4e3f4a73a6e1c221e0917357.pdf
    • https://static.usrfiles.com/ugd/33a2e4_4b799d35aa1b41a19ba6d6ec682955df.pdf
    • https://static.usrfiles.com/ugd/a4d998_bcc7e4d99de94f6594a26fd699fcc3c3.pdf
    • https://static.usrfiles.com/ugd/ba3095_85e553ddee3f4a2d8d17e6018fbb7e5b.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/gamox.pdf
    • https://cdn.shopify.com/s/files/1/0431/2861/9168/files/87141767125.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_off000071de.bin
8cd7b7e2b51b31020c1f46d3ccdb94412cc755e5fa49f1e418daebd77f4ab702		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DE 5444 bytes
font_01_sfnt_off0000845d.bin
6be67fc3e9a2388a7b4f4b09775b75e60de41bc20649beeec55d3f4019738118		 pdf-font-stream PDF embedded font (sfnt) at offset 0x845D 10576 bytes

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