Malicious PDF — malware analysis report

Static analysis result for SHA-256 2439cc2bafe4e08e…

MALICIOUS

PDF

48.3 KB Created: 2020-08-22 22:22:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c93cec12e5a813b66a8ba7aede890e3 SHA-1: 58af501ba44c382f8c8e8a1b4215cb15f0504ad8 SHA-256: 2439cc2bafe4e08ebb662e749c60a47aa374e2c893dd050b8ced1a95c27505fe
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=reformas+borbonicas+medidas+politicas'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous links to other PDFs hosted on Shopify. This suggests a campaign focused on SEO manipulation or distributing further malicious content. No scripts were extracted, and the document body is largely unreadable binary data.

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=reformas+borbonicas+medidas+politicas
    • http://files.fpelc.org/uploads/1/3/1/0/131070561/xexubo.pdf
    • https://cdn.shopify.com/s/files/1/0443/6351/4012/files/2109285888.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/jm_coetzee_waiting_for_the_barbarians.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/direpevuruzesalepuragatok.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5266/files/43518765873.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/29139707809.pdf
    • https://cdn.shopify.com/s/files/1/0433/2073/7950/files/14975236882.pdf
    • https://cdn.shopify.com/s/files/1/0430/2071/4137/files/iphone_6s_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/51268900441.pdf
    • https://cdn.shopify.com/s/files/1/0433/8932/1366/files/the_fall_book.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_off00007e2f.bin
6870338063c6d5edf38eec47cbd44b30de631744f6d38975b85e7fdb2c28886e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E2F 5448 bytes
font_01_sfnt_off0000909c.bin
6a06affd3835945d831204d8dcb775d125bac3c535a8e866d43693e9a64a8fd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x909C 10580 bytes

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