Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8fad017f31bbc67…

MALICIOUS

PDF

40.7 KB Created: 2020-08-08 15:28:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 56eb155099d196a00d32def36e6eaf4b SHA-1: 3ab3542899107d458c92c42d0672be4ef36cef93 SHA-256: a8fad017f31bbc67ccb6cd4dc661f724cf485fb3593ffad6bfff8a2f042a8f99
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is designed to lead users to malicious sites. The document also contains a large number of links to other PDFs hosted on Shopify, suggesting a link farm or SEO poisoning attempt. The primary malicious link is https://ttraff.com/pify?keyword=multifactorial+genetic+disorders+pdf, which is likely used to distribute malware or conduct phishing. 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=multifactorial+genetic+disorders+pdf
    • http://files.thebyrdfeedermeals.com/uploads/1/3/0/8/130814475/4399798.pdf
    • http://virosaw.nswhand.org/uploads/1/3/0/9/130969332/3069df4e1.pdf
    • http://files.misspatsyspreschool.com/uploads/1/3/1/6/131606222/c28faa2.pdf
    • https://cdn.shopify.com/s/files/1/0430/3824/5017/files/93665772165.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/ethiopian_reporter_english.pdf
    • https://cdn.shopify.com/s/files/1/0438/9135/9899/files/les_assises_fiscales_au_maroc_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/8893/6102/files/9649171717.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/21498748116.pdf
    • https://cdn.shopify.com/s/files/1/0429/5242/5631/files/selenium_automation_testing_tutorial_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0437/1238/1079/files/19907350572.pdf
    • https://cdn.shopify.com/s/files/1/0432/7279/8373/files/mudepikupusamotip.pdf
    • https://cdn.shopify.com/s/files/1/0451/0954/3077/files/budget_making_process.pdf
    • https://cdn.shopify.com/s/files/1/0429/3407/5558/files/84484181873.pdf
    • https://cdn.shopify.com/s/files/1/0434/3857/1670/files/53645378990.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_off000061e6.bin
0d8093809df6d62d6ff76e059fc75757c8b1324e46bd485e408ea1255b85fd4d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61E6 5328 bytes
font_01_sfnt_off00007422.bin
ebb14d0673ffd41ad7516dbf2f216db27b4e29bbc6bac2b6efdf8988db3a13cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7422 9900 bytes

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