Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e77ab16a718c9f9…

MALICIOUS

PDF

43.2 KB Created: 2020-08-24 05:50:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c6f0739632aac784e0d2d93cd3a4f04 SHA-1: 45bd1defcebfdb3008bf99e96533b7807e24b053 SHA-256: 3e77ab16a718c9f91ba5a9eb7c43150b63f5ea5338d9a76c9339e57eb7e66b86
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one to a known malicious redirector at ttraff.com. The document body text, though heavily obfuscated, contains the string 'Agatha christie endless night pdf' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary malicious IOC is the redirector URL, which likely leads to further malicious content.

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=agatha+christie+endless+night+pdf
    • http://files.loveinflightphoto.com/uploads/1/3/0/7/130739043/kejukij-wegufuwelopediw-zoraresi-xajodukowivogi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/botabekemo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/detailed_lesson_plan_in_filipino_grade_9.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/boxejinimujapijekujanago.pdf
    • https://cdn.shopify.com/s/files/1/0432/3731/0626/files/4931575102.pdf
    • https://cdn.shopify.com/s/files/1/0449/6100/5736/files/adriana_calcanhoto_vambora.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45484104345.pdf
    • https://cdn.shopify.com/s/files/1/0435/5689/6927/files/pizape.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3257/files/zerel.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_off00006b72.bin
87a070cc7d08430cfc3b765679e3192f170ea860562c5b056919d1b39c332887		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B72 5408 bytes
font_01_sfnt_off00007dd2.bin
47346cd3c6c49b29edbe51b81b554662893f27879126fa759efe89ef750f8674		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD2 10200 bytes

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