Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fe1af811449f0a2…

MALICIOUS

PDF

54.4 KB Created: 2020-08-30 06:00:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a05a8893bec88b19ff5b96889dc85cc0 SHA-1: cea4e359425c512896124a7462edf9d94b0f0760 SHA-256: 8fe1af811449f0a2d731aa4d59ffbb61b5968438bd468f85fa01de10c5449dfc
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=komi-+san+can%252527+t+communicate'. This indicates the document's primary purpose is to lure the user to a malicious site. The presence of a large number of external PDF links also suggests a link farm or redirection strategy. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=komi-+san+can%252527+t+communicate
    • https://cdn.shopify.com/s/files/1/0430/2720/2205/files/41398172492.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/16574816066.pdf
    • https://cdn.shopify.com/s/files/1/0435/2878/1988/files/jataziboxokitowakigigiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9957/files/oar_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0448/9661/6615/files/98865364582.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb7b9ff53afe4665843893c2008d0bbc.pdf
    • https://static.usrfiles.com/ugd/b8c837_779a8f071e7742d2b48e30c0235c4d51.pdf
    • https://static.usrfiles.com/ugd/26938b_2942bf4d4ebc4f23a3de5a0c94997962.pdf
    • https://static.usrfiles.com/ugd/7598fa_e60b824628c94f5eafcb04c106374a4e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0425bbb4481e48e0a3c28e4ead617b81.pdf
    • https://static.usrfiles.com/ugd/eaf48f_8a7da280a68348cebf07228812f110c0.pdf
    • https://static.usrfiles.com/ugd/f46427_930f1286936946d7941bbe519c7749f6.pdf
    • https://static.usrfiles.com/ugd/eed56f_d80432d6482c4293a3f3216a10edb5b1.pdf
    • https://cdn.shopify.com/s/files/1/0440/5772/3030/files/change_heroku_remote.pdf
    • https://cdn.shopify.com/s/files/1/0429/1464/4127/files/beatport_er_free_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/blowin_in_the_wind_piano.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5079/files/97922424579.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/
    • https://cdn.shopify.com/s/files/1/0435/2878/1988/files/jataziboxokitowakigig

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d72.bin
08426e18eb419097569ed7e7f87e6dd12c89cf4b777ddabe14462475d45c7095
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D72 10360 bytes
font_01_sfnt_off00008fd9.bin
9e914ccbc00bff57534d83b8a9722aa11a4fdbe7e1929868db666ea55c54d914
pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD9 4852 bytes
font_02_sfnt_off0000a056.bin
0d052bd0cef8440b30b74b409fc6c00f702c20d74b8cfbd3e2cdde2afbf3b1ad
pdf-font-stream PDF embedded font (sfnt) at offset 0xA056 12832 bytes