Malicious PDF — malware analysis report

Static analysis result for SHA-256 91d207c9499374ca…

MALICIOUS

PDF

47.9 KB Created: 2020-08-17 12:15:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74e4c03d053d64af863a42ae1d8cfad9 SHA-1: dc3ed399193f613e240cd18301c31d9f6fc8fb83 SHA-256: 91d207c9499374ca4add8c254e421aefe0c9f8c0382a382a4a33affc5e01a556
128 Risk Score

Malware Insights

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

The PDF contains a "download" button lure and multiple embedded links, including one pointing to a known malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=4-+6+practice+inverse+trigonometric+functions+worksheet, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, contains references to this URL and other PDF files hosted on Shopify, suggesting a link farm or redirection strategy.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=4-+6+practice+inverse+trigonometric+functions+worksheet
    • http://files.cocurricular.org/uploads/1/3/0/7/130738984/devasigarux.pdf
    • https://cdn.shopify.com/s/files/1/0428/1758/5308/files/xovepubududaxud.pdf
    • https://cdn.shopify.com/s/files/1/0431/1682/2679/files/17962916213.pdf
    • https://cdn.shopify.com/s/files/1/0434/7238/8249/files/70818604189.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/78305727276.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wulusiwebope.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/88020392138.pdf
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/butifalewikofozi.pdf
    • https://cdn.shopify.com/s/files/1/0434/4102/9276/files/fifolusuvozeporujibebexi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3529/files/i_love_money.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_off00006d11.bin
84c5c7f25cd80c7d84adfaeb2f178a711c2877f2c08b692e66c7ad08fbf6c20c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D11 5792 bytes
font_01_sfnt_off000080b8.bin
f7f54d7955253ddeef07fd226159f807eb2ac6744a216e852d6fc88b8b833eaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80B8 16196 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.