Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc1db1b655f2aa52…

MALICIOUS

PDF

40.5 KB Created: 2020-08-31 05:07:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba46ff0d4e8d1ed55444f9f2ea1a2b69 SHA-1: 94676e11aeb9854137096fae3b3e2d3d47b4f246 SHA-256: dc1db1b655f2aa5289fb3b54bf7ae9232f7795517ff3eaf3c051ea385ad3ed1d
150 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a movie download lure, which redirects to the malicious domain ttraff.com. This domain is flagged as a malicious redirector. The PDF also contains a large number of other external links, suggesting a link farm or SEO poisoning tactic. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=alfie+2004+full+movie+free+download
    • https://static.usrfiles.com/ugd/40512e_b2c22581107841e69ac1471221f63b3b.pdf
    • https://static.usrfiles.com/ugd/f3cb45_8ee015f7f64d4124995a6a963517c4fc.pdf
    • https://static.usrfiles.com/ugd/b85eb0_278faa101d154250a07e86691fff74aa.pdf
    • https://cdn.shopify.com/s/files/1/0462/0088/1302/files/loading_screen_10.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/silizesaloxemaki.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98559129476.pdf
    • https://cdn.shopify.com/s/files/1/0433/6068/2139/files/resume_cover_letter_template_for_teachers.pdf
    • https://cdn.shopify.com/s/files/1/0440/2036/7510/files/45251726933.pdf
    • https://cdn.shopify.com/s/files/1/0431/4873/8720/files/56174760190.pdf
    • https://static.usrfiles.com/ugd/9421c8_4d7c5eed90824895b77bf32f8517d1fa.pdf
    • https://static.usrfiles.com/ugd/136d07_b42c9a191bc84622806e4916185d0fc2.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_ea03b5fcea214c8b9ad3d1bd244200dd.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/
    • https://static.usrfiles.com/ugd/136d07_b42c9a191bc84622806e4916185d0fc2.p

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005eb5.bin
f53b615f07ca7ea14ae2f154403e0f8abb9df49caa93912278b0732ba56452ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB5 5376 bytes
font_01_sfnt_off00007108.bin
3af59a4ebfc7def41f96340ca8c89789034b3fbbe3b19cf1f42436a4e4a98c73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7108 10448 bytes

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