Malicious PDF — malware analysis report

Static analysis result for SHA-256 4322bd110eae585e…

MALICIOUS

PDF

32.0 KB Created: 2020-08-30 10:08:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3a49117bcd38ffeb0e917c3f2f24d891 SHA-1: 2ee30ea25c4ae27727d121c93a6fbed269f5f813 SHA-256: 4322bd110eae585e274ad6a61cbb68ef59425f8c1541344f613631f21dc24056
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=fraction+flow+chart'. It also exhibits characteristics of a PDF link farm, embedding a large number of external links, many of which are to benign-looking PDFs hosted on static.usrfiles.com and cdn.shopify.com. The primary malicious intent appears to be directing users to the ttraff.com domain, likely for further exploitation or phishing.

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=fraction+flow+chart
    • https://static.usrfiles.com/ugd/b8c837_b44f45c77d03440097d8429de3e8c9a8.pdf
    • https://static.usrfiles.com/ugd/33a2e4_8422c3c82f394dc181057692cc8102a9.pdf
    • https://static.usrfiles.com/ugd/696117_3cbd1b4d2f3c4da294405d6fcdb8ea77.pdf
    • https://static.usrfiles.com/ugd/b4609a_c19a243f747a4ac2a1569cf887e99984.pdf
    • https://static.usrfiles.com/ugd/b8c837_f29b2a0d105f4ecba9aed31dac4f6fbc.pdf
    • https://cdn.shopify.com/s/files/1/0433/9816/8727/files/rujojade.pdf
    • https://cdn.shopify.com/s/files/1/0431/1715/0368/files/59509332141.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8919/files/types_of_leadership_styles_in_education.pdf
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/29539243350.pdf
    • https://cdn.shopify.com/s/files/1/0466/5897/7957/files/happy_anniversary_video_song_hd.pdf
    • https://cdn.shopify.com/s/files/1/0437/7057/7045/files/9404136639.pdf
    • https://cdn.shopify.com/s/files/1/0433/8148/9818/files/56697859391.pdf
    • https://static.usrfiles.com/ugd/1decf9_f152dd5a1a554ce0bcf814c269872b5f.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe4d156699cb4103ae10e8fb5e5bc39a.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_off000043eb.bin
882be808162169f096efbdeedbdf0539028e41b6d930676b4c9a18f20c2c2c95		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43EB 4836 bytes
font_01_sfnt_off00005464.bin
a69e95a3972aec5018617ba8be841525fd56f8e1ddc9721098f4587798fee70e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5464 9132 bytes

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