Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d5929fbd459b968…

MALICIOUS

PDF

43.3 KB Created: 2020-08-30 22:55:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9dde1919ce3316a8ed3a0bbc22cedf80 SHA-1: 047d23dee1cfbbbbf1a3d3baa495848f281e8948 SHA-256: 3d5929fbd459b9683daa7fbc8ca01e7b4f6583f550bb699b2ede7a0db223733d
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to a 'Panasonic ag-hmc40p manual pdf' and the authoring application 'wkhtmltopdf', suggesting a lure. The primary malicious IOC is the redirector URL, which likely leads to further malicious 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.com/wix?keyword=panasonic+ag-hmc40p+manual+pdf
    • https://static.usrfiles.com/ugd/b8c837_f7a6cfca65204dce83d680068a15a65a.pdf
    • https://static.usrfiles.com/ugd/353d00_e0f9c98aa1e040c085118e029fd393be.pdf
    • https://static.usrfiles.com/ugd/0f5b72_9fd2b480241642daa9b3528071e543d5.pdf
    • https://static.usrfiles.com/ugd/b8c837_736f5ea4b2b1488188eed9c4b98ec757.pdf
    • https://static.usrfiles.com/ugd/b8c837_6fe114e92fed432bb41651a335f86c31.pdf
    • https://static.usrfiles.com/ugd/05900a_74db9937e34443c3bcfd8e87644482ce.pdf
    • https://static.usrfiles.com/ugd/493135_4c4cfb0e377b422884693481d7d63e42.pdf
    • https://static.usrfiles.com/ugd/b8c837_869f289aadad4a5c8a6094dccc426d03.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_cdd309938d274e70997c5c48375b20b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_babffb207e8143ed8cd33ab84d595b2a.pdf
    • https://static.usrfiles.com/ugd/3eed2b_5cb9784b5a664a98a418b64650d97eef.pdf
    • https://static.usrfiles.com/ugd/dad90e_3eeed47f9cb7439795d293d584c345d0.pdf
    • https://static.usrfiles.com/ugd/1f2646_f66927b9d37246d6a64c83f7bc18b913.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_off00005d8f.bin
f65a62575a6668d287e3ac01f8945a3194690028eae4c35fae8a9b46800869df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8F 5736 bytes
font_01_sfnt_off000070ed.bin
4b7ebaddb8dbae7370932d4ad1cbf47a25709cae08e6bf012e319bc0c78629e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70ED 14848 bytes

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