Malicious PDF — malware analysis report

Static analysis result for SHA-256 953a70b2c976a67c…

MALICIOUS

PDF

39.1 KB Created: 2020-08-28 21:33:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 18cd015e7c9c4016b686dc65e65c4d54 SHA-1: 0642055832d7f06639d2fc9527a6f977b315becc SHA-256: 953a70b2c976a67c7261957a8af4ec255b1007abaaa21ced05169a64f89ac979
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=suzuki+violin+book+4'. Additionally, it features a large number of embedded links to external PDFs, characteristic of a link farm. The document also includes a callback phishing lure, suggesting an attempt to engage the user through a phone-based scam. The combination of these elements indicates a malicious intent to redirect users to potentially harmful sites or engage them in a phishing scheme.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wix?keyword=suzuki+violin+book+4
    • https://static.usrfiles.com/ugd/b8c837_0a16c96112e843a8bfeef89f46da619b.pdf
    • https://static.usrfiles.com/ugd/b8c837_5109253166b049b291c4531faa663632.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c54bd2ae6154264994c4dc68574f727.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b8d0798de2a4789a4b0b27ac73622b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_9b3437ac93af4eedb579bd23c38eb787.pdf
    • https://cdn.shopify.com/s/files/1/0431/8085/1364/files/todijikubuxesuwepe.pdf
    • https://cdn.shopify.com/s/files/1/0434/0737/6542/files/bamagetiwibo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94260126358.pdf
    • https://static.usrfiles.com/ugd/b8c837_108fc8ab29a64a10a410ea0c5d2b291a.pdf
    • https://static.usrfiles.com/ugd/b8c837_32b88497fe0d4453ae700cd695b252f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_28659cd01f1f4b75b434e49e3ee1b8be.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_off00005ad7.bin
b55a32e640540ffa90c6ba43f4534ba841e674a4c2396c19f9e6b867839ccf6b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD7 4700 bytes
font_01_sfnt_off00006b01.bin
9f8b6b60fee3d299817508a42a9daef40610a0fac08be462d05dfb2edcfe5461		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B01 10864 bytes

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