Malicious PDF — malware analysis report

Static analysis result for SHA-256 328be972e7a2cc82…

MALICIOUS

PDF

40.3 KB Created: 2020-08-30 18:52:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9240a45811d3d062f48dfa7100aa4520 SHA-1: 917ac49bb682c7eb7250a9e1163a64e80dae9c25 SHA-256: 328be972e7a2cc8239d3f992e16e510a84145f3fe79950f94a34b38ddf7b7f2c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Auld lang syne bagpipe sheet music' and the malicious URL, suggesting a lure to trick the user into clicking the link. The PDF_SEO_LINK_FARM heuristic indicates the presence of multiple external links, further supporting a malicious intent to drive traffic to potentially harmful sites.

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.cc/wix?keyword=auld+lang+syne+bagpipe+sheet+music
    • https://static.usrfiles.com/ugd/2c608b_c4074cefce584cb59391a1e4d03e7d26.pdf
    • https://static.usrfiles.com/ugd/0789d5_a682fa325ace46e597a87538817ff5e5.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe4257bca4854e4fae1a7556344863cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_b3221cb3382d453ba15785ef94e9ec21.pdf
    • https://static.usrfiles.com/ugd/b85eb0_467fcb28ef3445b690a9b2439334b7c1.pdf
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/fowekunawevanasovire.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/11004682611.pdf
    • https://cdn.shopify.com/s/files/1/0434/7274/8709/files/fipidudipeletito.pdf
    • https://cdn.shopify.com/s/files/1/0445/5759/8884/files/algorithms_and_data_structures_made_easy_narasimha_karumanchi.pdf
    • https://static.usrfiles.com/ugd/b8c837_05d5040985d642f49455785083da860d.pdf
    • https://static.usrfiles.com/ugd/b8c837_36c073a86cdc4dcfac5bb624d5f7100e.pdf
    • https://static.usrfiles.com/ugd/b8c837_68d2c8855b2a4a2b8bc2f4f02c9fc655.pdf
    • https://static.usrfiles.com/ugd/b8c837_f5d5f1db93b345bcac292f10af032b67.pdf
    • https://static.usrfiles.com/ugd/e643da_e7113ffc6b154056aa25c83978ef3e94.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_off00005ea1.bin
48cc1dba3242f9b88813878136321cf9c3de80382af7d619b729d067f5187546		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA1 5620 bytes
font_01_sfnt_off00007192.bin
0879b4fa50d313d500258c295a2d7d545a6cb0e5bc541447aa57a109ccf5d6a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7192 10184 bytes

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