Malicious PDF — malware analysis report

Static analysis result for SHA-256 a00740e8e6e82395…

MALICIOUS

PDF

49.2 KB Created: 2020-08-14 21:15:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 531918fadaa3a8697554606a3cda546f SHA-1: 9ea637f8c106e3b4d7fac08e05ea45224c9290d8 SHA-256: a00740e8e6e82395108acd8a6ea1c869332f60e4f16ff52afcfab92d93bde76a
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic indicating it's a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=bhojpuri+movie++karne+ki+website'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains the same malicious URL and a benign-looking PDF link, suggesting a lure to trick users into clicking the malicious redirector.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=bhojpuri+movie++karne+ki+website
    • http://files.bluemountainsafricanvioletsaus.com/uploads/1/3/1/4/131452958/buvelafuvozag_badavag_zixib_vulanujerizitex.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/vonivopubenabanomi.pdf
    • https://cdn.shopify.com/s/files/1/0430/3332/9817/files/puwunutibodilaramevoke.pdf
    • https://cdn.shopify.com/s/files/1/0429/0134/0319/files/prepositional_noun_phrases_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0163/files/pokemon_dimond_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/4062/8120/files/fumiremoxoriwuded.pdf
    • https://cdn.shopify.com/s/files/1/0440/2036/7510/files/wexap.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6716/files/39908954889.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89709194360.pdf
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/27712248110.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6841/files/papigitadarivetitowodewi.pdf
    • https://cdn.shopify.com/s/files/1/0450/1933/2766/files/libro_apologetica_catolica.pdf
    • https://cdn.shopify.com/s/files/1/0432/6303/3502/files/aprendizaje_cooperativo_en_educacin_fsica_fundamentos_y_aplicaciones_prcticas.pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/metalikovofafufefuteg.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cb4.bin
f1ba8ba5629e5707d4a22fb367a2a6c3f7a63336fc05e4a22e8f8279a0c3c3ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB4 5508 bytes
font_01_sfnt_off00006f5f.bin
421a5a51b31ff77c187fdb6236bf673066f30ae2b52bfffb9e5092c8a9ea3406		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F5F 10336 bytes
font_02_sfnt_off000092ad.bin
bd38ca5e3ca1182778de254d5db250e48e729fa8734cb3a03653fe7ee06b80d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92AD 16112 bytes
font_03_sfnt_off0000a7c4.bin
a01461fbf8c8d69ee4851a601e45e4d95b99718d593ca240faa50502baf85b08		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA7C4 4124 bytes

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