Malicious PDF — malware analysis report

Static analysis result for SHA-256 d45ec1333bdb9f73…

MALICIOUS

PDF

48.0 KB Created: 2020-08-30 07:38:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a57c4cf8b48d4099ba9a87e2c9ffae87 SHA-1: 5a51cb88b16a45ce80092f0944ad5be042e82d82 SHA-256: d45ec1333bdb9f7300010ea1827c30029d8ca8445439ae156c2d352a36d1ac44
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. It also exhibits characteristics of a link farm, with numerous embedded URLs. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to a malicious site, likely for phishing or malware delivery.

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.com/wix?keyword=obituary+template+psd
    • https://static.usrfiles.com/ugd/0adedf_7b5530a3cd5f4123ba2a4eb3f06fe3ed.pdf
    • https://static.usrfiles.com/ugd/b8c837_54e796cc733b41d19765821b0bf088f9.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5015d7093324947bdb15965c442a8df.pdf
    • https://static.usrfiles.com/ugd/a107db_83f4a20f1ea9453d89318c4d1c4aff0a.pdf
    • https://cdn.shopify.com/s/files/1/0433/3626/9983/files/2019_tamil_movies_hd_1080p.pdf
    • https://cdn.shopify.com/s/files/1/0429/3482/9222/files/68905990966.pdf
    • https://cdn.shopify.com/s/files/1/0436/6116/4697/files/boyka_full_movie_2019.pdf
    • https://cdn.shopify.com/s/files/1/0437/6713/6408/files/rock_paper_scissors_movie_parents_guide.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3893/files/biodata_maker.pdf
    • https://cdn.shopify.com/s/files/1/0435/8370/1151/files/the_long_dark_heavy_hammer.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/40430790682.pdf
    • https://static.usrfiles.com/ugd/409ca8_b986ed606db344028015fef6f4219f4f.pdf
    • https://static.usrfiles.com/ugd/b8c837_415bde64a0bc42d9af62f05bd185224d.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_off00007e64.bin
f3e672c974839fa4f9adeb74100a8a677e1ebc89712b6f2b157ada128332b1f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E64 5372 bytes
font_01_sfnt_off0000908d.bin
a00723de3726058cdf0406861fd8bf408a44bd55fd0c2e76f893dcc1e02c4e5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x908D 10128 bytes

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