Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5f5298abb746153…

MALICIOUS

PDF

39.1 KB Created: 2020-08-14 23:28:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bdcbb4f56dc15dc913905e8b31a55bd SHA-1: fc709b4f78f77198d676c8acf38114c43d9bd3d0 SHA-256: d5f5298abb7461532dacd0782ec9e39cf7a3654b7c84c2693c107661169fbf33
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, forming a link farm designed to direct users to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=rain+background+hd+video+free, which is flagged as a malicious redirector. The document body appears to be corrupted or obfuscated, but the presence of the link farm and the malicious redirector strongly indicate a phishing or redirection attack.

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.ru/pify?keyword=rain+background+hd+video+free
    • http://files.thejambalayashoppe.com/uploads/1/3/1/8/131856158/7470373.pdf
    • http://files.mjankauski.com/uploads/1/3/1/3/131384575/lowumavaxebalofekole.pdf
    • http://files.tobydehay.com/uploads/1/3/0/7/130739951/lebetolexomoru.pdf
    • https://cdn.shopify.com/s/files/1/0434/0151/1064/files/50514715387.pdf
    • https://cdn.shopify.com/s/files/1/0436/5297/2697/files/52233776594.pdf
    • https://cdn.shopify.com/s/files/1/0430/3493/5447/files/49246443196.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28391359898.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/xetiwekakipiniku.pdf
    • https://cdn.shopify.com/s/files/1/0431/5149/1236/files/44256611465.pdf
    • https://cdn.shopify.com/s/files/1/0434/7668/0869/files/52666722000.pdf
    • https://cdn.shopify.com/s/files/1/0439/1639/4648/files/61782602075.pdf
    • https://cdn.shopify.com/s/files/1/0436/8980/3941/files/18199915979.pdf
    • https://cdn.shopify.com/s/files/1/0435/8150/5695/files/acgih_tlv_2020_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/57515970725.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/19362167972.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_off00005c35.bin
3f7214a7d30bb70469cc2864ff50c8cbc0e3fc3d016525f2425d0c06fc51aa6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C35 5344 bytes
font_01_sfnt_off00006e69.bin
e05f54bbad3e9082644eb906e7f572c908273f46b559e7c985703833e3d729dd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E69 9816 bytes

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