Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d39223894990f0c…

MALICIOUS

PDF

37.5 KB Created: 2020-08-31 08:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc664bfb48670e59ae24f1981b76a2ae SHA-1: 0dc61b5288b414bae22821916c1ae3ad893cc939 SHA-256: 9d39223894990f0c0b85aee04ade494ae5aeb7a9354f4180c8c158f5739e64b5
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to the presence of a redirector link pointing to ttraff.me, which is associated with malicious activity. Additionally, it contains a large number of external links, characteristic of a link farm, likely intended to obscure the final malicious destination. The document body contains garbled text but includes the suspicious URL.

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.me/wix?keyword=overwatch+to+cs+go+sensitivity
    • https://cdn.shopify.com/s/files/1/0432/9180/3801/files/plato_del_buen_comer_y_jarra_del_buen_beber.pdf
    • https://cdn.shopify.com/s/files/1/0435/6728/4387/files/noaa_bathymetric_data.pdf
    • https://cdn.shopify.com/s/files/1/0436/2724/9826/files/64383055357.pdf
    • https://cdn.shopify.com/s/files/1/0437/7870/3521/files/cutting_edge_upper_intermediate_student_book_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/2741/4695/files/13673528692.pdf
    • https://static.usrfiles.com/ugd/eed56f_9c9e6a96de0c46449eb17ebde9eec194.pdf
    • https://static.usrfiles.com/ugd/b4f0c6_31cd3f61cc2d4ae1acc00c7d9bfbfce0.pdf
    • https://static.usrfiles.com/ugd/d775a9_41a95aee10c746af8b612672d4b74a3c.pdf
    • https://static.usrfiles.com/ugd/5e8de6_f9f69db26b8f4823b8fc4f6b5b1b6ad9.pdf
    • https://static.usrfiles.com/ugd/b8c837_e7e32b66f6294d6b98eaf0221bf5f332.pdf
    • https://static.usrfiles.com/ugd/b8c837_aafbd17cb98245e3a07b59be7b774e56.pdf
    • https://static.usrfiles.com/ugd/b8c837_f488848918cd444ea40602ca62bbc208.pdf
    • https://static.usrfiles.com/ugd/b8c837_209cea2bae7245a0a6236b62b357853e.pdf
    • https://static.usrfiles.com/ugd/87a178_9b1308f351fa401faa421c3273d0f593.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_83e6ebcef98645998339731e466fa382.pdf
    • https://static.usrfiles.com/ugd/d5415a_fb92b0a20f034226875daff7c5fb49e6.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_off00005598.bin
d77ba7267e6c2eebeb934d69f953d5b397c5f96be998b31c11ee755951f9ef62		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5598 5308 bytes
font_01_sfnt_off000067bc.bin
b4679d1f37f4204eaa2dfbc2565f84f8f7937af7e5a0767fcc2695ff074af419		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67BC 9824 bytes

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