Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cf543add201d8de…

MALICIOUS

PDF

34.8 KB Created: 2020-08-16 21:32:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b59b3aa1097ae688f57e82fb64d78a6b SHA-1: fe298dc78524a146aadb78665a192d13ae635da8 SHA-256: 4cf543add201d8dea476778bf8435a85b7b56d453683bad4b37fec79804805ce
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, directing users to 'https://ttraff.ru/pify?keyword=free++capleton+slew+dem'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The document body also contains a lure suggesting the user needs to install a browser extension or update to view content, which is a common social-engineering tactic. These elements indicate a likely phishing or malware delivery attempt.

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=free++capleton+slew+dem
    • http://files.deevinestudio.com.au/uploads/1/3/2/6/132695663/dixidujulezamom_nepupedisadaxo_zadesuwawora.pdf
    • http://ziniveju.livingcolorfundraiser.com/uploads/1/3/0/8/130813780/fd253.pdf
    • http://files.yiannchen.com/uploads/1/3/0/7/130739488/276e4.pdf
    • http://vokijeka.georesource.co.uk/uploads/1/3/2/7/132740649/1371580.pdf
    • http://files.marleysinternational.com/uploads/1/3/0/7/130775503/mepovijadazege.pdf
    • https://cdn.shopify.com/s/files/1/0437/6576/0151/files/84286250079.pdf
    • https://cdn.shopify.com/s/files/1/0431/0463/2992/files/ada_diabetes_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3294/files/miboxeguxubunavap.pdf
    • https://cdn.shopify.com/s/files/1/0432/7096/3366/files/gigenotusixisadilefeluj.pdf
    • https://cdn.shopify.com/s/files/1/0435/0833/4744/files/problemas_movimiento_rectilineo_uniforme.pdf
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/different_types_of_exception_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0434/1687/9271/files/9011483621.pdf
    • https://cdn.shopify.com/s/files/1/0435/5827/3183/files/madasokojesorawun.pdf
    • https://cdn.shopify.com/s/files/1/0434/4712/4130/files/unearthed_arcana_d_d_3._5.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_off00004965.bin
077197cbd132c0d2234dea83ebdff6477b35a59b0a0e7eb407012d4ef1145604
pdf-font-stream PDF embedded font (sfnt) at offset 0x4965 5264 bytes
font_01_sfnt_off00005b3f.bin
78489eeeae5238915ad4aa72f9acde50f7c88b95cf6d3966a4e02c0a8e750a3d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B3F 10652 bytes