Malicious PDF — malware analysis report

Static analysis result for SHA-256 f77874a2d7283059…

MALICIOUS

PDF

39.3 KB Created: 2020-08-30 16:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2398610f24f8d7fb477f4ddd4dc31ae SHA-1: cd817f6b932a5053dd25067c379b2efa8ccae734 SHA-256: f77874a2d728305984a8df658238e4da7a8308398a058500d2b141c9a2fb53e7
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.com/wix?keyword=sketchup+pro+crackeado+mac', which is designed to lure users into downloading cracked software. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links to external PDFs, likely for SEO manipulation to increase visibility of malicious content. The presence of a visual download button further supports the deceptive nature of the document.

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=sketchup+pro+crackeado+mac
    • https://static.usrfiles.com/ugd/9b5f63_5b81a29a160e4310a9e158ba328881a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_ce9fe9742dad456c8961b1dc3fe4173d.pdf
    • https://static.usrfiles.com/ugd/be19e1_805eb9d0dc1e41659055dd785e118d5d.pdf
    • https://static.usrfiles.com/ugd/b8c837_cbd68313aa79451b801647f1eb970551.pdf
    • https://static.usrfiles.com/ugd/3eed2b_dd9f667abe4147cc9ec4e4a6f833bedc.pdf
    • https://static.usrfiles.com/ugd/de65f7_f9c2ef8cffef47a39a8d98bce46c992a.pdf
    • https://static.usrfiles.com/ugd/b8c837_9eb3d39f42ad4bfbaf4168ee3d268dab.pdf
    • https://static.usrfiles.com/ugd/a91264_0efab5ca99b44475a3ffe6e0d6baf6fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_455f551428b740809a72f88b29ea7ddc.pdf
    • https://static.usrfiles.com/ugd/b8c837_31d95a695f884083bc1682679f5bd960.pdf
    • https://static.usrfiles.com/ugd/868401_86d68306044a4b9eba5ea4685089c313.pdf
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/69065408483.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3609/files/malayalam_calendar_2020_free_download.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_off00005c1a.bin
b7c4edb1db27f79cc71e5f5e2eb8e46335fb3ad588ea5b7c3ae2949a6214aa82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1A 5272 bytes
font_01_sfnt_off00006de3.bin
8313ecf1ca1381f1d559c58b192967a419b8eeaa48a42dc14ad412e3be3df707		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE3 10280 bytes

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