Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9640303c7855d3e…

MALICIOUS

PDF

47.1 KB Created: 2020-08-22 05:23:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 645961f8cedba28e4c9063055842df6b SHA-1: b2131d6e53a8fb956c2afa6528fdc9457e956a3b SHA-256: e9640303c7855d3e34db2cd1754ce4992908c983329c007cbe973cdf284dd3f3
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm designed to redirect users. One of the primary URLs, 'https://ttraff.com/pify?keyword=conclusion+del+reported+speech', is flagged as a malicious redirector. The document body itself is largely unreadable binary data, but the presence of numerous links, including one to a potentially malicious redirector and others to various Shopify-hosted PDFs, suggests a lure or phishing attempt. The file's purpose appears to be directing users to malicious infrastructure through a deceptive link farm.

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=conclusion+del+reported+speech
    • http://kumate.xabobcats.com/uploads/1/3/1/8/131856746/5323a49.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7567/files/rabolo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7279/0428/files/24588133355.pdf
    • https://cdn.shopify.com/s/files/1/0437/8558/4802/files/gilulakixofetin.pdf
    • https://cdn.shopify.com/s/files/1/0434/4938/5126/files/wejumefilera.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30072581460.pdf
    • https://cdn.shopify.com/s/files/1/0463/0980/2146/files/bertazzoni_dishwasher_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/0956/3045/files/megaloblastic_anemia_in_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/58736034208.pdf
    • https://cdn.shopify.com/s/files/1/0432/9612/9192/files/podon.pdf
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/xezebaperosororo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3204/1889/files/suxumuzezizumirakowoji.pdf
    • https://cdn.shopify.com/s/files/1/0431/7587/0613/files/wumominununikujevenu.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_off00007a4d.bin
a2ab6b6fc45c833116817478cf5a32fe2133e801621b36ddf8e3e4ab93e84431		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4D 4856 bytes
font_01_sfnt_off00008ac0.bin
7cae5604f485548c9c4ef32ecf690b08705272ae5f313641692f5bbed5543928		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AC0 10976 bytes

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