Malicious PDF — malware analysis report

Static analysis result for SHA-256 f116e4ebf60111bf…

MALICIOUS

PDF

36.1 KB Created: 2020-08-29 20:20:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78d14795a646acc9eb0cbec0dc7aaf3e SHA-1: a6219281eee09ccc122050b62cd828696e7fb4c9 SHA-256: f116e4ebf60111bfdf620c42c8530083da424806b2852b972dffbbe32d93df33
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/wix?keyword=tuscany+crib+and+changer', which is flagged as a malicious redirector. This suggests a phishing or social engineering attack aiming to redirect the user to malicious content.

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/wix?keyword=tuscany+crib+and+changer
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/samefuwumaxejupositaje.pdf
    • https://cdn.shopify.com/s/files/1/0432/4248/7976/files/luwifel.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/ziwevavuginamebas.pdf
    • https://cdn.shopify.com/s/files/1/0448/1892/3686/files/polisacaridos_en_alimentos.pdf
    • https://cdn.shopify.com/s/files/1/0431/0017/6544/files/adjectives_order_exercises.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_e687d709bc9a434a9246366df1b10c12.pdf
    • https://static.usrfiles.com/ugd/b8c837_49ecb1d4859a4784a24d40ff33b95f8a.pdf
    • https://static.usrfiles.com/ugd/b8c837_4a8e8b88ce3f42ecaa4fc7149577fd9a.pdf
    • https://static.usrfiles.com/ugd/9ff9b8_f6bfb5a8bd77454b8790ea94116b9dab.pdf
    • https://cdn.shopify.com/s/files/1/0431/2717/7380/files/tetorewekovuledenefa.pdf
    • https://cdn.shopify.com/s/files/1/0463/1196/4829/files/1991_toyota_pickup_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5156/4707/files/markup_on_surface_pro.pdf
    • https://static.usrfiles.com/ugd/b8c837_33d8c61b388f47fc97ebbf1c00f5c01f.pdf
    • https://static.usrfiles.com/ugd/b8c837_85ca022e453d45e4ac8ec682d778d4e4.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7db4e5df721457397b4970c38ae0436.pdf
    • https://static.usrfiles.com/ugd/3aca14_8a0df7e228ea4e5ca460366d025855b3.pdf
    • https://static.usrfiles.com/ugd/b8c837_0498c0ee08044bf8bb70d73c57a1bc4a.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_off00005204.bin
3301625c9590564680c6a8936f07cc28d055952ced1e4952e6da9a13e2024f75
pdf-font-stream PDF embedded font (sfnt) at offset 0x5204 5360 bytes
font_01_sfnt_off00006433.bin
3a49fcf83ab95ecf7d7b6f1f1f4bdd2666afb2a2938d21e2969921dde8412b20
pdf-font-stream PDF embedded font (sfnt) at offset 0x6433 9236 bytes