Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c50785c4e63d0c6…

MALICIOUS

PDF

67.9 KB Created: 2020-08-21 16:04:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 48233d57195d3fdc422c2b3dfdbbf160 SHA-1: 165c9ccdef7b9feca26a3857b65c696501c7ad3a SHA-256: 8c50785c4e63d0c692a141bec8053eb930f13eeca7a35387968edff69571e7e1
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=antimicoticos+mecanismo+de+accion+pdf'. This indicates the document's primary purpose is to redirect users to potentially harmful content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the embedded URL itself is a high-confidence indicator of malicious intent.

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=antimicoticos+mecanismo+de+accion+pdf
    • http://nedizi.sooversociety.com/uploads/1/3/1/0/131070431/65b8630b33b.pdf
    • http://zakomo.dofnelsonfaithfomation.com/uploads/1/3/0/7/130738697/bofape_xekirisurufuli.pdf
    • http://papol.pitch2script.com/uploads/1/3/2/6/132681396/2722662.pdf
    • http://fijofa.hanisthegroomer.com/uploads/1/3/2/8/132814930/sekazigesekid.pdf
    • http://files.craftworksmusic.org/uploads/1/3/0/9/130969300/jepofimuta.pdf
    • https://cdn.shopify.com/s/files/1/0434/1065/3338/files/advanced_excel_tutorial_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77636621448.pdf
    • https://cdn.shopify.com/s/files/1/0440/1712/3493/files/jikapagafuv.pdf
    • https://cdn.shopify.com/s/files/1/0437/6828/3294/files/cement_sheet_dealers_in_karachi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9289/4105/files/assassin_s_creed_2_main_theme_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/8949/4177/files/8796096470.pdf
    • https://cdn.shopify.com/s/files/1/0429/5013/1878/files/como_hacer_aceites_esenciales_caseros_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0431/8268/6367/files/webovupidivaxig.pdf
    • https://cdn.shopify.com/s/files/1/0439/4798/3006/files/75726787097.pdf
    • https://cdn.shopify.com/s/files/1/0438/6599/7472/files/los_sauces_algernon_blackwood_descargar.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_off0000ca00.bin
ba8f588e8d1ee52e5891336b8da115fdf0629bcfe5b9bd185c544f0a9a407369		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA00 5160 bytes
font_01_sfnt_off0000db71.bin
d0f1d557205081944e0e78fb5776b2fd5179097e55a2a5c6db9e6615c8a8ee07		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDB71 11372 bytes

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