Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c1b02744cf45ef9…

MALICIOUS

PDF

47.3 KB Created: 2020-08-27 16:46:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3b490558d14d12e8da2596fa2490ddf SHA-1: e4e6688775bf45c3653f968ef6c8d7435fa6b02a SHA-256: 9c1b02744cf45ef94937507107562e71a46495a4792e9e96f21bcaad51ccdff4
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL, https://ttraff.cc/pify?keyword=de+rue+de+justice+belfast+cours+r%25C3%25A9el, is a known redirector. The document body, though heavily obfuscated, contains this URL and numerous other PDF links hosted on various domains, indicating a coordinated effort to distribute malicious content.

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/pify?keyword=de+rue+de+justice+belfast+cours+r%25C3%25A9el
    • http://jigowir.petridish-science.org/uploads/1/3/0/7/130776271/9c35d6708ac.pdf
    • http://files.katzsarah.com/uploads/1/3/1/3/131379639/9060233.pdf
    • http://files.beamsleylodge.co.uk/uploads/1/3/0/7/130776493/wajabipisuvegag-remisataxajuxo-gemovuwaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/9930/7673/files/gazuvozosumumusaga.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/22707180998.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85755015361.pdf
    • https://cdn.shopify.com/s/files/1/0447/7334/3383/files/gozimajop.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7566/files/bewivufirusiduziva.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/libidurekatomanazavevufi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/red_power_ranger_coloring_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/3014/3395/files/52739299606.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5445/files/4330272593.pdf
    • https://cdn.shopify.com/s/files/1/0439/3045/2123/files/xaxilojem.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/80365219482.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_off000075fa.bin
0e9dc6817eacd1ff833a93e81526222594e58fa39e4b27db291d91102ae8f877		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75FA 5372 bytes
font_01_sfnt_off0000880e.bin
dc4d2b899105157052870588ff2c9a6552e10d57fb6d53e6c503fc6cb2a0b054		 pdf-font-stream PDF embedded font (sfnt) at offset 0x880E 12224 bytes

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