Malicious PDF — malware analysis report

Static analysis result for SHA-256 444a5d8d1ea46a5f…

MALICIOUS

PDF

56.2 KB Created: 2020-08-26 02:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fa8d0d21c288a9a9e9b1b2fba949703 SHA-1: d9fa20119371fe2ab2aa720c86d9d75aca98652d SHA-256: 444a5d8d1ea46a5f1c9860e67a56a3325fd6a64bdeef49d0bdc9d3ac263653bf
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, pointing to 'https://ttraff.cc/pify?keyword=manual+de+reparacion+chevy'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests a large number of outbound links, likely for SEO poisoning or distributing further malicious content. The document body, though heavily obfuscated, contains the same redirect URL, reinforcing the 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=manual+de+reparacion+chevy
    • http://files.asampoh.com/uploads/1/3/1/6/131636678/gotem.pdf
    • http://neriw.bagusnugroho.com/uploads/1/3/2/8/132814930/jakujeni_tukedanijawap_vojedomanilul_lekix.pdf
    • http://files.hiphopandhomeruns.com/uploads/1/3/1/4/131437977/9731066.pdf
    • http://files.rvrescueart.com/uploads/1/3/0/7/130775668/tadol_togeb_jukibezutabaw.pdf
    • http://files.gptrackxc.com/uploads/1/3/1/8/131871416/b403ba7899391d.pdf
    • https://cdn.shopif
    • https://cdn.shopify.com/s/files/1/0434/8254/6341/files/junizafega.pdf
    • https://cdn.shopify.com/s/files/1/0435/9290/8963/files/49637261566.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4696/files/1307754204.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/xojewomuminamif.pdf
    • https://cdn.shopify.com/s/files/1/0439/4339/5483/files/broncopneumonia_canina.pdf
    • https://cdn.shopify.com/s/files/1/0436/8692/0347/files/fixiwewaxegimara.pdf
    • https://cdn.shopify.com/s/files/1/0437/8702/6581/files/90836365392.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1562/files/17182487127.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_off00009cfc.bin
c40dde91ce7d43e08c7ad98a3eb959bad4e16bd94a32ffb8ab6286593052e663		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CFC 5148 bytes
font_01_sfnt_off0000ae7e.bin
9ac091318e712c94851f3607d87a7575e71fdee14e2328255754c495fa769318		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE7E 11004 bytes

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