Malicious PDF — malware analysis report

Static analysis result for SHA-256 b137752d1072a233…

MALICIOUS

PDF

47.3 KB Created: 2020-08-21 17:49:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d84e776bf34717f64df714de104a93f SHA-1: c125b87f4326859c51922b6812eba479e0339aa9 SHA-256: b137752d1072a233ee8ea0d653c6c3807eefb1c393b288bab08d68c73dbed87b
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which likely serves as a lure to malicious content. The document body contains garbled text along with the redirector URL and several other PDF links, suggesting an attempt to obscure the malicious intent or manipulate search engine results. No scripts were extracted, and the primary malicious activity appears to be the redirection via the embedded malicious link.

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.cc/pify?keyword=manorama+six+feet+under+720p++worldfree4u
    • http://gisoboxu.amboy.net/uploads/1/3/1/4/131454696/xijudepafopuvin.pdf
    • http://zafur.johnabale.com/uploads/1/3/0/8/130813528/rawijofuge-ragoweto-narusinoxodut-bufojug.pdf
    • http://fikek.douxoverdesign.com/uploads/1/3/2/3/132302868/1856062.pdf
    • http://files.southloupvet.com/uploads/1/3/1/6/131637240/wokafop-fumupazutanakal-zozeriwipinur.pdf
    • https://cdn.shopify.com/s/files/1/0440/9376/7832/files/vidyasiri_scholarship_application_form_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0435/1967/2472/files/phonics_practice_book_kindergarten.pdf
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/catfish_farming_in_concrete_tanks.pdf
    • https://cdn.shopify.com/s/files/1/0434/2009/0535/files/83688214386.pdf
    • https://cdn.shopify.com/s/files/1/0431/4755/9067/files/gozuzisate.pdf
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/22060111354.pdf
    • https://cdn.shopify.com/s/files/1/0433/6330/3575/files/jusonixe.pdf
    • https://cdn.shopify.com/s/files/1/0437/5334/1082/files/amazon_echo_show_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/7927/9527/files/vulazunowi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1387/3569/files/classroom_management_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/zububegoj.pdf
    • https://cdn.shopify.com/s/files/1/0450/1933/2766/files/uml_activity_diagram_tutorial.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_off00006df5.bin
f863b72bd724673e471020e5579f4be4401c60bdda1811efb0254d84b38357f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF5 5796 bytes
font_01_sfnt_off000081ba.bin
b48f885530f371ad9b27e032304d951c08da4ad9470a2fead9cb7149a36c1c3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x81BA 14976 bytes