Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2d07fa991398a31…

MALICIOUS

PDF

39.9 KB Created: 2020-09-04 04:06:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73336f29945db80575222e83032f78a4 SHA-1: dab7593ab76ddeba70b6da81777f95b4906f590d SHA-256: f2d07fa991398a317df9bab9d4bf196fc576042f4c3c3373e7cd492437c34632
120 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, many of which point to a redirector service. The document body text, though partially corrupted, suggests a lure related to 'free reading comprehension sheets for 3rd grade'. The primary malicious URL identified is a redirector that appears to be part of a link farm designed for SEO manipulation, likely to obscure the final malicious destination.

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.link/pify?keyword=free+reading+comprehension+sheets+for+3rd+grade
    • https://static.usrfiles.com/ugd/3bf302_6f85a36853af45a28a9967ebfebc38ae.pdf
    • https://static.usrfiles.com/ugd/8d5d69_fd311a68368f422483b5064f35f5126d.pdf
    • https://static.usrfiles.com/ugd/f4de5e_0ed3c1a14d3d43059bedd923b6894966.pdf
    • https://static.usrfiles.com/ugd/ca300b_e8fca9aa631945fdb69e5bb7c29af7c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_de645057731a4d4885797e5ec200911f.pdf
    • https://static.usrfiles.com/ugd/e6e573_2d631e94688a4eba97eea9016037d67a.pdf
    • https://static.usrfiles.com/ugd/d90490_a61026e71a904c36a7b646f6e9bf9dbc.pdf
    • https://static.usrfiles.com/ugd/6846fe_999d3cfd9ac64d099defc309ac486d70.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7707/files/rafijomefage.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7576/files/pibaxikexe.pdf
    • https://cdn.shopify.com/s/files/1/0435/8845/2515/files/badiwiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9816/files/lipiwedufojekenu.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_off00005d79.bin
b34f7e5c0400e68b51c6fb939a3a59c862bc265b7ff0c1dc4742fcd0c44ed48b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D79 5656 bytes
font_01_sfnt_off00007095.bin
652275e468e858f5ac49fe91fd9e379c1217484d3e49c398995d419d8d7ce54b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7095 9980 bytes

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