Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb9ca3640fded659…

MALICIOUS

PDF

43.6 KB Created: 2020-09-08 04:12:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fda95c068a5800b687a704ff7829410 SHA-1: 561802abd60f0ead7c94bb52c06f0fbf5ccfab71 SHA-256: bb9ca3640fded6590b6a6cb05914164ea36083b8eb4acd99062f75c1664cc200
128 Risk Score

Malware Insights

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

The PDF file contains a deceptive call-to-action disguised as a legal document template. It embeds multiple links, with one pointing to a known malicious redirector. The primary malicious link is 'https://ttraff.me/pify?keyword=60+day+notice+to+vacate+letter+template', which likely leads to further malicious content or malware download. The presence of a link farm heuristic further indicates a malicious intent to distribute harmful 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.me/pify?keyword=60+day+notice+to+vacate+letter+template
    • https://static.usrfiles.com/ugd/d43733_a94e5a73782b4388a2d5526e760bbe60.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb4b813d100d407e8cdd5574de92dee7.pdf
    • https://static.usrfiles.com/ugd/2b3f46_79d4644cca31455eb0bbb1fe9888b059.pdf
    • https://static.usrfiles.com/ugd/b8c837_afef08e525ea48958788c233d9a71a03.pdf
    • https://static.usrfiles.com/ugd/5b9365_cdd2b0e693554f289b7ac22daa3c1520.pdf
    • https://static.usrfiles.com/ugd/4d400c_91da30dda9724ca4b44271dd9f0e6edc.pdf
    • https://static.usrfiles.com/ugd/b8c837_df04a3c7bfc34e81a87a5fd656363619.pdf
    • https://static.usrfiles.com/ugd/850f07_40047a793294485d8726c1acf29b3d1e.pdf
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/zisezimutesolewometedixuw.pdf
    • https://cdn.shopify.com/s/files/1/0435/8068/6495/files/behave_robert_m_sapolsky.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/5314088670.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_off00006cf1.bin
8581f8f957ac47884e2609c3dcfac69f4ea242f732153c498ec81c97ce162564		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF1 5404 bytes
font_01_sfnt_off00007f44.bin
0031c65472d596f293a217ab225e67a2e1e60c7c05674ed9696b458a243d48b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F44 9948 bytes

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