Malicious PDF — malware analysis report

Static analysis result for SHA-256 20720446212fc137…

MALICIOUS

PDF

45.9 KB Created: 2020-08-30 20:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72bc51bbd455fa96e7e90fbb932cb2a9 SHA-1: 898e56964ed1ef5c0bc64ded7a89ca2228e4618f SHA-256: 20720446212fc137c79d9be56c7a12b9d1b16ae4b3c70c364449d9b8ff722ae9
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of external links, a technique often used in SEO link farms to manipulate search engine rankings or distribute malicious content. One of the embedded URLs, 'https://ttraff.cc/wix?keyword=genis+zit+anlami', is flagged as a known malicious redirector. The document body contains garbled text and metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document but rather a container for links.

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.cc/wix?keyword=genis+zit+anlami
    • https://static.usrfiles.com/ugd/1a89c8_08f1e3277042402f9fff7464c104d0a4.pdf
    • https://static.usrfiles.com/ugd/79e0dc_22d86872b0f14d43915bd880f34c2e7f.pdf
    • https://static.usrfiles.com/ugd/36f25b_e0e848b231bb4b72bd1ff6267067ddc1.pdf
    • https://static.usrfiles.com/ugd/b8c837_436b470d7889460b89dc67d65f879388.pdf
    • https://static.usrfiles.com/ugd/b8c837_a107a1d0827641bd97289a95c729bf0a.pdf
    • https://cdn.shopify.com/s/files/1/0439/5764/9566/files/mokilaxikozixov.pdf
    • https://cdn.shopify.com/s/files/1/0431/8871/5682/files/jagotesoligo.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/27782742747.pdf
    • https://cdn.shopify.com/s/files/1/0436/9353/9482/files/37236455818.pdf
    • https://cdn.shopify.com/s/files/1/0428/9898/1030/files/61634794060.pdf
    • https://cdn.shopify.com/s/files/1/0431/5670/1348/files/96087739315.pdf
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/susinur.pdf
    • https://static.usrfiles.com/ugd/269bb8_989c9894b4cb45d88f17f10d9ad9180c.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc8001a335954c0597ff760a643b0b0d.pdf
    • https://static.usrfiles.com/ugd/06497e_52fb232cee9f4f338c939f5295a947b9.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d96.bin
1ba04ff87b232034018d90e5937357d21cc55e08c00ac13112b6d037bb5b994a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D96 6632 bytes
font_01_sfnt_off000073c3.bin
ffce1ad2a341dd1edd9fb21b72a786e7a5f017bd9b6fdb0146a23d326b0087ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C3 4816 bytes
font_02_sfnt_off0000841e.bin
5857c18415f7537a0cdb0c6d9188ccfe347b8a01617136ccf88fc3d204cc1343		 pdf-font-stream PDF embedded font (sfnt) at offset 0x841E 11996 bytes

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