Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e65bb2117415279…

MALICIOUS

PDF

50.2 KB Created: 2020-09-06 14:50:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03804fc28fd32708c8559b4c6ab288d5 SHA-1: 3852a35f3d2f8995c647c53c874fc384e6965632 SHA-256: 4e65bb21174152793f78d6bb060bb4fba1d1b587d2b6b573e132628eaff3b354
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it redirects to known malicious infrastructure. It also fires for PDF_SEO_LINK_FARM, suggesting a large number of outbound links. The document body, though heavily obfuscated, contains the URL 'https://ttraff.link/pify?keyword=mandated+reporting+laws+in+north+carolina' which is flagged as a malicious redirector. The presence of urgency language further supports a phishing or social engineering attack pattern. The file is generated by wkhtmltopdf, a tool often used to create PDFs from web content, which may explain the link farm.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.link/pify?keyword=mandated+reporting+laws+in+north+carolina
    • https://static.usrfiles.com/ugd/b914b5_8b23a91c838d4421b5b39c2a3315c707.pdf
    • https://static.usrfiles.com/ugd/e3834b_1ecc6ce390544adbb6ccd632f158ff82.pdf
    • https://static.usrfiles.com/ugd/e4ff69_e4838b47718b42b0b8dd8750af4478af.pdf
    • https://static.usrfiles.com/ugd/b8c837_4894bbb1a51b432d995f3a6f5d64b0ce.pdf
    • https://static.usrfiles.com/ugd/4dd980_adfaa6fee90f4142b85a56cff5706171.pdf
    • https://cdn.shopify.com/s/files/1/0432/8967/3888/files/36041445692.pdf
    • https://cdn.shopify.com/s/files/1/0458/1585/7318/files/10683956410.pdf
    • https://cdn.shopify.com/s/files/1/0429/3237/1622/files/sixogobexisikadete.pdf
    • https://static.usrfiles.com/ugd/a771bd_f151c94d86eb47b39f50100673f7bc73.pdf
    • https://static.usrfiles.com/ugd/b8c837_bdf838f6053b4991886d3a1a2d6d2eaf.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a36094868c549edb7d52b3539906ddd.pdf
    • https://static.usrfiles.com/ugd/6c032c_953e16b6819344258e37361cc6d7ec1e.pdf
    • https://static.usrfiles.com/ugd/ca300b_103ade0f361f413ab470c6195a83af8f.pdf
    • https://static.usrfiles.com/ugd/3fb742_f1db37271a084261843dbaab26210652.pdf
    • https://static.usrfiles.com/ugd/bb13a2_15d1507f57224716abc471e60a8fbc48.pdf
    • https://static.usrfiles.com/ugd/01e791_94b08bf99cfd470aa80c2452d0708f10.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_off0000868e.bin
1f08e77de2849a106333afeabb27d0fba7c433fb430fd624bb71b7e17aa40e59
pdf-font-stream PDF embedded font (sfnt) at offset 0x868E 5432 bytes
font_01_sfnt_off00009920.bin
587e9f8d4df7bd6b97a9f0890672910140e86f60fe81dcecacf636ec38eeed07
pdf-font-stream PDF embedded font (sfnt) at offset 0x9920 10076 bytes