Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a4c661a19139bcf…

MALICIOUS

PDF

40.4 KB Created: 2020-09-02 00:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3ca9af8581431db644f3d6632f391ff SHA-1: a761acc359717078ed1fd53c6da6f6e0d54e06a1 SHA-256: 2a4c661a19139bcf52b71ca05bffb62d6664ad4b0b664f0862c39a9c82e23d73
150 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'https://ttraff.com/wix?keyword=canucks+schedule+in+excel+format'. This indicates a social engineering attempt to lure the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.com/wix?keyword=canucks+schedule+in+excel+format
    • https://static.usrfiles.com/ugd/a467d2_34fe6f36572344cebddf16a7c1b6910e.pdf
    • https://static.usrfiles.com/ugd/a1fb72_2cc4946952ec44e1b68d4992c7a935dc.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc759c359be643d1a5467d6609002bdf.pdf
    • https://cdn.shopify.com/s/files/1/0462/7575/6181/files/xurutidowebulexav.pdf
    • https://cdn.shopify.com/s/files/1/0438/1566/5824/files/8557678173.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2520/files/vagozojezawarukozisa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7371/5880/files/cores_de_cabelo_de_outono_profundo.pdf
    • https://cdn.shopify.com/s/files/1/0436/3331/1904/files/40478987224.pdf
    • https://cdn.shopify.com/s/files/1/0430/8303/8874/files/46021195521.pdf
    • https://static.usrfiles.com/ugd/bd5c68_ee86b16c8ecc46c4a7200560e4119c1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d9c380340e674d38b7994a786f2529dd.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_off00005b66.bin
66d375cd91fd88bd6c7d11b8657eca73f50b60d0df84cabb906f4e4ef878e32d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B66 5300 bytes
font_01_sfnt_off00006d42.bin
51f76c258ff21a40579d921f08baa6f74ef36bb5294136cd3694b4f7467a2e86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D42 12960 bytes

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