Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6123d31088eacec…

MALICIOUS

PDF

30.1 KB Created: 2020-11-03 22:44:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24b57286a54f22005b349abc1de78807 SHA-1: 5949f9d852045bbf3921c0d2ea17829431098e01 SHA-256: d6123d31088eacecaff9a7cec6d39458bf5879c52855ea8f456402f65d7a48b4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of embedded links, many of which point to potentially malicious redirector infrastructure. The primary malicious URL identified is https://gettraff.ru/strik?keyword=open+network+linux+github, which is flagged as a known malicious redirector. The document's structure suggests an attempt to create a link farm or to direct users to malicious content, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://gettraff.ru/strik?keyword=open+network+linux+github
    • https://gokipeko.weebly.com/uploads/1/3/4/3/134351508/korujujepukaxe.pdf
    • https://cdn-cms.f-static.net/uploads/4417992/normal_5f96c873b9730.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/aa9de229-deb7-43d9-8904-fb9d12e55556/event_study_stata.pdf
    • https://uploads.strikinglycdn.com/files/c8fccb5e-f03b-4523-b545-db5f8c37051d/achilles_unblocked_game.pdf
    • https://uploads.strikinglycdn.com/files/1232781d-9109-405f-8cda-a7eafe36a3ea/fezobejotibelo.pdf
    • https://uploads.strikinglycdn.com/files/e50d2ecc-71dd-4489-915e-ebb97c665464/22988903472.pdf
    • https://uploads.strikinglycdn.com/files/e8022ae9-f88f-4d00-86cf-00c5523c299e/nofodazuxi.pdf
    • https://uploads.strikinglycdn.com/files/a758809b-3a7d-47e1-8a88-6d8708c0a3fe/33689264658.pdf
    • https://cdn.shopify.com/s/files/1/0439/0807/1576/files/latent_heat_capacity_formula.pdf
    • https://cdn.shopify.com/s/files/1/0507/5684/5740/files/kanda_sasti_kavasam_lyrics_in_tamil.pdf
    • https://uploads.strikinglycdn.com/files/11d32815-244e-470d-898a-ed6305eebd48/ukulele_chords_somewhere_over_the_rainbow_israel_kamakawiwoole.pdf
    • https://uploads.strikinglycdn.com/files/d0a0ff33-8b91-4f09-a88a-f0f9cbb60583/55972045370.pdf
    • https://uploads.strikinglycdn.com/files/f2e3e598-0f92-482a-9da2-c36d7c5df6c8/menemixekejigajazuz.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006704.bin
0c7134fd276aa50665df1eb5971a106d704481a4dc96d0028d9cabd64e6d17e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6704 5084 bytes

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