Malicious PDF — malware analysis report

Static analysis result for SHA-256 d160e7c182508c13…

MALICIOUS

PDF

41.0 KB Created: 2020-09-13 23:42:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 031ff20c4b01c3f3651752d2690ac84f SHA-1: cefcdb7827658425faeef16b52debfdc9b9ffe0b SHA-256: d160e7c182508c1389c2677f3d95d62070be11ad604bc84f5912b43aec10c701
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including a critical redirector link to 'https://ttraff.ru/wb?keyword=solution%20manuals%20for%20textbooks'. This indicates a likely phishing or social engineering attempt to lure users to a malicious site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.ru/wb?keyword=solution%20manuals%20for%20textbooks
    • http://files.salpiconontario.com/uploads/1/3/2/7/132740670/6866887.pdf
    • http://files.mybasketball.ca/uploads/1/3/0/7/130740258/1557552.pdf
    • http://vurowem.merakiandcoffee.com/uploads/1/3/1/6/131606490/vodetifuvusojo.pdf
    • http://puxivuje.scbeer.org/uploads/1/3/1/1/131164250/jifuzixisudisolavin.pdf
    • http://files.prairiewindslife.com/uploads/1/3/1/8/131856430/b7100dca24.pdf
    • http://kitaj.noramacquarrie.com/uploads/1/3/2/7/132740763/1374125.pdf
    • http://magomo.movetomadisonvilleky.com/uploads/1/3/1/3/131379935/natebejumizasi.pdf
    • http://files.mickhallart.com/uploads/1/3/2/7/132740949/jovojew_wavisijudisava.pdf
    • https://static.usrfiles.com/ugd/39d081_e8c8f58e1110476abbb56b661a47e5da.pdf
    • https://static.usrfiles.com/ugd/7dfe85_d7f6099f033b44948f60526e639a4f8e.pdf
    • https://static.usrfiles.com/ugd/bb10c5_5b2a4670e5494aa185f6cf0a7fdf5e8f.pdf
    • https://static.usrfiles.com/ugd/4aae87_a7078a699756465baa2a08ee5506a450.pdf
    • https://cdn.shopify.com/s/files/1/0430/4538/8442/files/fosepipatesuvafosuv.pdf
    • https://cdn.shopify.com/s/files/1/0440/1473/1429/files/pijizebilaludi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4923/8171/files/pearl_jam_alive_drum_tab.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2233/files/paxoronagejop.pdf
    • https://cdn.shopify.com/s/files/1/0431/1023/6314/files/xemilizaruresivatolu.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004992.bin
25c0bba19f432c36329fcb92034f94dd10b488a4dce69aacc8c0eb5d101bf100		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4992 6384 bytes
font_01_sfnt_off00005949.bin
f2676736637f8ef1ad505f9664fdb78b45919847fb7f09fcdd81238d12ea7e7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5949 5288 bytes
font_02_sfnt_off00006b29.bin
7accecb880c2b0fed565a62c5cae8b27c20057ab4a355afeda0aeb37332f7926		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B29 2252 bytes
font_03_sfnt_off00007491.bin
f0debf9bf28f4c70b67381b29de7113dc0ef000fb4d1503c233ae926c8760599		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7491 9840 bytes

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