Malicious PDF — malware analysis report

Static analysis result for SHA-256 98cfe0d8e28a9849…

MALICIOUS

PDF

58.8 KB Created: 2020-08-19 10:27:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49b39038d0fbcc79f90a6f572843a6f1 SHA-1: e10dd5d14b6574f2926fe550f24a65a0b6886175 SHA-256: 98cfe0d8e28a9849b9db6312e69ea48e5efd676cc19cc51e60917338b16ff567
120 Risk Score

Malware Insights

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

The PDF contains a link farm with 24 external links, many of which are hosted on Shopify. The primary link redirects to a known malicious redirector infrastructure. The document body text is garbled, but the presence of the link farm and the malicious redirector strongly suggest a phishing or malware distribution attempt. 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.ru/pify?keyword=characteristics+of+successful+entrepreneurship+pdf
    • http://files.westonmusic.co.uk/uploads/1/3/0/7/130775633/90f73537c7f929.pdf
    • http://files.northoftime.com/uploads/1/3/1/4/131453902/154353dd.pdf
    • http://lafiropel.lifephotographycl.com/uploads/1/3/1/6/131606289/ruzugozero.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/73121007565.pdf
    • https://cdn.shopify.com/s/files/1/0433/4767/3253/files/91963415422.pdf
    • https://cdn.shopify.com/s/files/1/0431/7973/7237/files/14219794888.pdf
    • https://cdn.shopify.com/s/files/1/0437/8673/1681/files/95937862382.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2411/files/atomic_theory_test.pdf
    • https://cdn.shopify.com/s/files/1/0435/7731/1391/files/28698692862.pdf
    • https://cdn.shopify.com/s/files/1/0436/3144/4128/files/gipufolimo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/40580121563.pdf
    • https://cdn.shopify.com/s/files/1/0437/5589/6990/files/yellowstone_winter_guided_tours.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_off0000a992.bin
496cc2097cb29c5462e65d32f8ce951d401fe9b28b571819a281b301917e7e4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA992 5148 bytes
font_01_sfnt_off0000bb09.bin
f07273bef43728d58bff2f95b74f96e9164b6b24d07e870a1f48d661ce39be51		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB09 10348 bytes

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