Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9e9735f61c08fc0…

MALICIOUS

PDF

39.8 KB Created: 2020-08-24 18:57:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3de381cb04191584f2a09f5e1197154d SHA-1: bf3a68ad19575d99a919d278c36c8399ef6bdb22 SHA-256: d9e9735f61c08fc0af524c20baa81e904aa5e121e20b0a1b3c6ae61610677baf
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.com/pify?keyword=airplane+airbus+images+free'. This URL is presented within the document body, disguised as a free download. The document also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains, but one critical link leads to a malicious redirector. No scripts were extracted from this sample.

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.com/pify?keyword=airplane+airbus+images+free
    • http://files.kennedycounselling.com/uploads/1/3/0/7/130739023/ropuvupota.pdf
    • http://files.familychildcareassoc.com/uploads/1/3/1/3/131380008/zesarofesetome.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67572949107.pdf
    • https://cdn.shopify.com/s/files/1/0431/8121/1810/files/practical_music_theory.pdf
    • https://cdn.shopify.com/s/files/1/0434/0088/8469/files/westminster_shorter_catechism.pdf
    • https://cdn.shopify.com/s/files/1/0429/6517/2387/files/third_law_of_thermodynamics_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3873/5517/files/ubuntu_12._04_sources._list.pdf
    • https://cdn.shopify.com/s/files/1/0438/3087/0173/files/616297259.pdf
    • https://cdn.shopify.com/s/files/1/0435/0525/4566/files/mixed_present_tenses_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/55600955568.pdf
    • https://cdn.shopify.com/s/files/1/0427/4041/6678/files/petalewuzoludaxedul.pdf
    • https://cdn.shopify.com/s/files/1/0439/8222/5566/files/54337095939.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_off00005d85.bin
7f8a60942fbed2b0ecb070bb4362dbb8f78d1f889e20ffa276929f848edcbbf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D85 5348 bytes
font_01_sfnt_off00006f8f.bin
658fbe9cbe4bc7211d0644a3cf32c9f6bb688cb65d50416a94490eb434d71e50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8F 10104 bytes

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