Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfaee78bb2130ecf…

MALICIOUS

PDF

43.5 KB Created: 2020-08-30 19:42:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 34af0182a219ea90ed1bc2caa1f1e0ac SHA-1: 77fcba7cfac67acad31aa960c0a0baa355161b31 SHA-256: cfaee78bb2130ecf2d9635a870923ead92f2bb23621b1e02f37600bdd7b40900
128 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.com, which is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain text related to 'Net exam question papers with answers pdf' and includes a call-to-action phrase, suggesting a lure to trick users into clicking the malicious link. The presence of numerous external PDF links further indicates a link farm strategy, likely for SEO manipulation or to distribute malicious content.

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=net+exam+question+papers+with+answers+pdf
    • https://cdn.shopify.com/s/files/1/0430/4509/3530/files/42036140282.pdf
    • https://cdn.shopify.com/s/files/1/0440/3471/9909/files/boss_katana_100_artist_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/1424/9886/files/monejasu.pdf
    • https://cdn.shopify.com/s/files/1/0434/9011/5748/files/google_docs_embed.pdf
    • https://static.usrfiles.com/ugd/c618e9_3130ab7c534b4404baa59edc0db92c9a.pdf
    • https://static.usrfiles.com/ugd/83f04e_788f3ed36c1642bcb6b3d5678ffe8bf7.pdf
    • https://static.usrfiles.com/ugd/b8c837_b163dd7a12994e479ffc31d4ffef78a0.pdf
    • https://static.usrfiles.com/ugd/87d215_70644cea4f1642febafd62992132a547.pdf
    • https://static.usrfiles.com/ugd/3f4b99_160d6dd62b07428a89e8983bc9caa38e.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d2309370a324b2c9b9d451de9dedad4.pdf
    • https://cdn.shopify.com/s/files/1/0433/5540/6494/files/zolajerefixabege.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7660/files/81753953978.pdf
    • https://cdn.shopify.com/s/files/1/0431/4172/6370/files/sezasutawozinul.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_off00006b6c.bin
a46fdb2468f5d49136c0637e6e2c036f568fa4ee95e4c5f1676409bcf4a3c3e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6C 5504 bytes
font_01_sfnt_off00007e18.bin
21e980c40326b3693038ce894c9aeb3d8bc055f37b6ff21ab495bbb7f31fd16c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E18 10360 bytes

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