Malicious PDF — malware analysis report

Static analysis result for SHA-256 a64353d6ee8b2b68…

MALICIOUS

PDF

37.8 KB Created: 2020-07-31 19:18:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4535c3be563f4c7247ae727cdab08905 SHA-1: 224f6dbc8f8b370f1bdccd02f51a65b4b65236d2 SHA-256: a64353d6ee8b2b68bf87e659ae199f2f87fc8371afc1c004e55cc709d3eeebcd
120 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF document contains a large number of embedded links, many of which point to a redirector service (ttraff.cc). The document body text, though heavily obfuscated, contains the URL that is also present in the heuristics, suggesting a lure to download further content. The primary malicious IOC is the redirector URL, which is likely used to obscure the final destination of the payload.

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/pify?keyword=autodesk+maya+2017+basics+guide+pdf
    • http://files.columbiadentcenter.com/uploads/1/3/0/9/130969910/jubegonakajij-desagomabof-sateno-pikilolot.pdf
    • http://files.waynesmeats.com/uploads/1/3/2/3/132302894/fojim-foxikubefegoj-guzimamo-xagekabodoripu.pdf
    • http://files.destinationsananselmo.com/uploads/1/3/0/9/130969993/1460790.pdf
    • http://files.prodigalsonsinc.org/uploads/1/3/0/7/130740536/zonavexab.pdf
    • http://files.religiousdoodles.com/uploads/1/3/1/3/131379578/9d7517d15303.pdf
    • https://cdn.shopify.com/s/files/1/0441/3590/7480/files/9450195114.pdf
    • https://cdn.shopify.com/s/files/1/0437/8938/5885/files/88040842360.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/pupavapuju.pdf
    • https://cdn.shopify.com/s/files/1/0435/8940/2779/files/3787353169.pdf
    • https://cdn.shopify.com/s/files/1/0432/5208/9000/files/galopulakewigonikaxu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/0176/6310/files/nafokeloxazositaveju.pdf
    • https://cdn.shopify.com/s/files/1/0431/1253/0081/files/muzuzezebi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8544/7833/files/90507812295.pdf
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/wavanex.pdf
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/92030461359.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_off00005445.bin
497a45b15844bfcfb1ef01ef3f73a810243b14b4085f728bc8cc39476a676042		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5445 6048 bytes
font_01_sfnt_off000068e7.bin
da19a46d5f51c06d785252336a00d39f631af135fac5908a5acc1db88760e4aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68E7 9848 bytes

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