Malicious PDF — malware analysis report

Static analysis result for SHA-256 b98087ac81e666a4…

MALICIOUS

PDF

112.0 KB Created: 2020-08-26 17:45:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a4f10c345797f967609c54451c25d6af SHA-1: a159f79f03fbf6df7138ca1af7f11263968cc7bd SHA-256: b98087ac81e666a413ab480848c979576f9caf7b74cdea328b7f419d8980dc9c
150 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a download for 'Mortal Kombat 11', which redirects to a known malicious URL. The document also functions as a link farm, containing numerous external links, many of which are SEO-optimized. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=mortal+kombat+11+free+download+pc
    • http://files.tranquilsoundsproductions.com/uploads/1/3/1/4/131409508/e4cfe59d50b1a.pdf
    • http://files.carriagehousecinema.org/uploads/1/3/2/6/132695258/tarefobako-mizuvowomoxevex-lufetuzivo-sanupitixijur.pdf
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/adb_install_apk_error_device_unauthorized.pdf
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/23501163490.pdf
    • https://cdn.shopify.com/s/files/1/0438/4319/0944/files/fit_body_boot_camp_workouts.pdf
    • https://cdn.shopify.com/s/files/1/0430/8900/2645/files/zisosa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/kirotasuruvizolofabin.pdf
    • https://cdn.shopify.com/s/files/1/0433/2044/3045/files/taylor_series_expansions.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/66381222179.pdf
    • https://cdn.shopify.com/s/files/1/0435/2717/6343/files/zidudaluf.pdf
    • https://cdn.shopify.com/s/files/1/0448/1276/3298/files/adobe_acrobat_reader_leitor_e_editor_de_apk.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_off00017b02.bin
2aaf074e6a36270afb248758e03508cadb9ff0dc29edcf84ab5df1175acacce2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17B02 5476 bytes
font_01_sfnt_off00018dad.bin
05c160174f17505081e30a39192ab2333563cc8e62a8b502301e928c7ffbfe40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18DAD 11180 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.