Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b75340d4d463cf…

MALICIOUS

PDF

61.8 KB Created: 2020-09-09 03:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0397e3afa2a20d08bebdca9aa2157048 SHA-1: 258839d682cb8cb5a4543a390d3d74f133266410 SHA-256: b6b75340d4d463cf71eb63fce596f07f496fe8d4eec2865e35add01024546b3e
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.link/pify?keyword=layout+template+ppt'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to download or view a template, which ultimately leads to malicious infrastructure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.link/pify?keyword=layout+template+ppt
    • https://cdn.shopify.com/s/files/1/0438/4548/4706/files/mowoxapenu.pdf
    • https://cdn.shopify.com/s/files/1/0440/1378/1157/files/credit_reporting_bureau_news.pdf
    • https://cdn.shopify.com/s/files/1/0433/6038/7240/files/alabama_quit_now_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0726/files/prenatal_physiotherapy_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0435/0607/3759/files/60071483136.pdf
    • https://static.usrfiles.com/ugd/52b593_600119699dfd45c48936b4ff80be4d5b.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_b519766303874f0e86a21c12818d4fb8.pdf
    • https://static.usrfiles.com/ugd/7ad284_27e80ee0e6fb47b8b075cc0d1f8e1a54.pdf
    • https://static.usrfiles.com/ugd/3bf302_9f9d00d992cc49acad56780acdb8caa2.pdf
    • https://static.usrfiles.com/ugd/d9f7b5_a1198352ecf14c82879faa15e81c4981.pdf
    • https://static.usrfiles.com/ugd/12745a_a41fd88fa46042a28f97d463c26403ea.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_off0000ae29.bin
09340dd7bf7d20dcd5e691d8d0dd61568d66486a0ba3fc5482f6726aa16fc3b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE29 4732 bytes
font_01_sfnt_off0000be42.bin
0a8347ab5382283e1a1f4b3015503a4f3f3c21def347884c6654149c44dc8cb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE42 14032 bytes

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