Malicious PDF — malware analysis report

Static analysis result for SHA-256 d511897ff45aaccb…

MALICIOUS

PDF

38.0 KB Created: 2020-08-29 04:20:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad18b60c60249b4995797c6e1fb8c8ba SHA-1: 32ff2f45f3efd1cccdf8f1d5f95d8d1919547839 SHA-256: d511897ff45aaccbef8e7e7851687691ac6db0269b886b2c91835447bd337e16
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=empire+john+leguizamo+online+free'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous embedded links to other PDF documents, likely intended to obscure the malicious redirector. The ML classifier also strongly indicated maliciousness.

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.cc/wix?keyword=empire+john+leguizamo+online+free
    • https://cdn.shopify.com/s/files/1/0449/4213/1355/files/johannes_liechtenauer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0436/0998/1085/files/arun_sharma_data_interpretation.pdf
    • https://cdn.shopify.com/s/files/1/0435/8383/2227/files/bernoulli_s_principle.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd6338bc029f4548a233fdc90e232bac.pdf
    • https://static.usrfiles.com/ugd/b8c837_d7ab815e6eef49bda4aab5af8fd98d98.pdf
    • https://static.usrfiles.com/ugd/b8c837_78332af507ad48bea4df53ee23f6d7e8.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/actual_test_listening.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/kupije.pdf
    • https://static.usrfiles.com/ugd/b8c837_484f3ac17bed406b91ea4e0aafd85a77.pdf
    • https://static.usrfiles.com/ugd/b8c837_0c650ddaa800435e91a13b4b273b9ecc.pdf
    • https://static.usrfiles.com/ugd/b8c837_117d75b6444e4070a4938bab2526fbed.pdf
    • https://static.usrfiles.com/ugd/b8c837_a9fdd1a1bcdd489484aa97302ab25be8.pdf
    • https://static.usrfiles.com/ugd/b8c837_f86c7c490be2418584e3af20be53b190.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_off00005399.bin
ff602bbfb330bcc6ddc4ec22f45bae305a42f9eeb6838baab1069f343cd9b319		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5399 5220 bytes
font_01_sfnt_off0000654a.bin
5ed0e1dfc68151919a549b1e16bb0663fecd881da7f2fe966cee59027193db20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x654A 11420 bytes

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