Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2e59f3eb3c1164…

MALICIOUS

PDF

43.4 KB Created: 2020-08-09 17:02:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d5cfe8dbbba825c802615036ee2ae56 SHA-1: 3a3e8c1a649a7d3b6fa03e06194d3941ae568d87 SHA-256: 7a2e59f3eb3c116403219f7229f2a575ef2324cadbd519ae3c4bea4dd8cfecd7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link to a redirector URL, ttraff.cc, which is flagged as malicious. The document body text, though heavily obfuscated, contains keywords related to tax declarations ('Belastingaangifte 2020 belgie pdf'), suggesting a phishing lure. The heuristic PDF_SEO_LINK_FARM indicates a mass of external links, many pointing to benign Shopify domains, but the primary malicious link is the redirector. No scripts were extracted from this sample.

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=belastingaangifte+2020+belgie+pdf
    • http://files.letschangeourcity.org/uploads/1/3/1/0/131070051/walejurozibamunixizo.pdf
    • http://files.karenfrock.com/uploads/1/3/0/7/130775707/5465000871.pdf
    • http://files.seeyoudowntheroad.org/uploads/1/3/1/0/131070581/wuxadositukaw_potixunodilon_bojig_sawezodam.pdf
    • https://cdn.shopify.com/s/files/1/0436/0686/8126/files/blank_map_of_continents_and_oceans.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/81910273646.pdf
    • https://cdn.shopify.com/s/files/1/0432/3606/5435/files/7753466707.pdf
    • https://cdn.shopify.com/s/files/1/0432/3042/9346/files/nba_scoreboard_espn.pdf
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/lowirejezatekuwugazu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/togowuzuvuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/0119/2352/files/nudomitafujen.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/39956312050.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2044/files/kenmore_he2_dryer.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4228/files/39394872235.pdf
    • https://cdn.shopify.com/s/files/1/0430/3912/9751/files/anatomy_of_cerebral_cortex.pdf
    • https://cdn.shopify.com/s/files/1/0429/4190/7100/files/kepanerebukirazawokijuma.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/74298841393.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_off000069fb.bin
7b209b8a3407c9eb45717130284c488e79f0e495efe58182d250416b6825228b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69FB 5576 bytes
font_01_sfnt_off00007d05.bin
4d26025d68ca14cdb37cff11776c38e4c44831d5aa0bbf455fb4557b8013ee68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D05 10456 bytes

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