Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace17a1dc3c03fab…

MALICIOUS

PDF

41.1 KB Created: 2020-08-10 11:20:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 599e0e43dba79a9dc011400951764ca9 SHA-1: 061900c4fbeb1fb87c79c4980de7bf26951ea837 SHA-256: ace17a1dc3c03fabe05b9f3b1234665f7a916af5f33b2bf24b11ebe8bc6905fe
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains, but ultimately redirect to a malicious URL (ttraff.cc). This indicates a link farm or redirection attack designed to obscure the final malicious destination. The document body itself is heavily obfuscated and contains the malicious redirector 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=diabetes+mellitus+tipo+1+definicion+pdf
    • http://xakeniwod.sarkakocicka.net/uploads/1/3/1/3/131378776/gigudaf.pdf
    • http://files.mesquitesculpturesaz.com/uploads/1/3/1/6/131606407/1346949.pdf
    • http://files.thestorystudiohk.com/uploads/1/3/0/7/130775156/dudokala_gepudefoze_jaxamejiboda.pdf
    • http://files.applewoodphoto.com/uploads/1/3/2/6/132682802/07ce1791.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/84314258957.pdf
    • https://cdn.shopify.com/s/files/1/0436/9865/1288/files/66092915217.pdf
    • https://cdn.shopify.com/s/files/1/0431/0364/9954/files/budarun.pdf
    • https://cdn.shopify.com/s/files/1/0428/6332/9446/files/solosabojupox.pdf
    • https://cdn.shopify.com/s/files/1/0433/8837/1107/files/kemiwopegozimodovepisalu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/kenwood_radio_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/7922/8837/files/3989783805.pdf
    • https://cdn.shopify.com/s/files/1/0434/0888/3870/files/85928254069.pdf
    • https://cdn.shopify.com/s/files/1/0432/2502/2621/files/98573802451.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/57688608248.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_off0000628e.bin
89be914717ade989b1fe0f10db782076323a8da60d4ca11d97d8f65733fb105a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x628E 5396 bytes
font_01_sfnt_off000074de.bin
51be01b6ba9120764926fd651466030fbb50486191c5c7b7add434b6f93b1f50		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74DE 10108 bytes

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