Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2d3688aba49dc7…

MALICIOUS

PDF

41.5 KB Created: 2020-09-09 04:11:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba90b82cd00e1bff8db04e2b0a56246f SHA-1: f42333309493307adf5ec4827c68e5a0737a9e0a SHA-256: dc2d3688aba49dc7af5895f4faf877ca2dd590c1123ea1176d7cfeeae6eb50e8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links that point to a redirector service, which in turn leads to a link farm hosted on Shopify. The primary malicious URL is https://ttraff.club/pify?keyword=risk+assessment+report+template+word, which is presented as a risk assessment report template. The ML classifier strongly indicates maliciousness, and the PDF structure suggests a lure to external content.

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.club/pify?keyword=risk+assessment+report+template+word
    • https://cdn.shopify.com/s/files/1/0437/4953/9989/files/99791905414.pdf
    • https://cdn.shopify.com/s/files/1/0451/6826/3317/files/99475216206.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/watch_men_in_black_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/3422/9398/files/kulafoxikewuveboxis.pdf
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/pewowixenunabafugav.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/50673931254.pdf
    • https://cdn.shopify.com/s/files/1/0433/7552/6042/files/different_types_of_landforms_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0432/1076/8546/files/vukavakil.pdf
    • https://static.usrfiles.com/ugd/b8c837_de81def0044f4711a94fb8dd501c1da2.pdf
    • https://static.usrfiles.com/ugd/c0518c_be8880780ffc44799bd796b7537af3f9.pdf
    • https://static.usrfiles.com/ugd/8c0e65_09ae08bf04b84200a63be1f5baad6bd4.pdf
    • https://static.usrfiles.com/ugd/197ed4_7f9e8a1bde5e4325b6e559444f4367b0.pdf
    • https://cdn.shopify.com/s/files/1/0430/9896/4117/files/2648659628.pdf
    • https://cdn.shopify.com/s/files/1/0432/8210/4478/files/bullying_o_acoso_escolar.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_off000064ad.bin
3492e705b87b41c7c20a1603ea0e964db98eefca26c9f86ac6e36b4b4de81533		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64AD 5268 bytes
font_01_sfnt_off00007697.bin
70c331caa48ce13045c22f8194386807e6aa9bf5d15c470a791fac719a0ed5b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7697 10048 bytes

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