Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc2a13888b7716a…

MALICIOUS

PDF

55.3 KB Created: 2020-08-30 10:43:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0f8c0271db03b02621a6e6c2a8c7ae8 SHA-1: 9e78b5169ad7bbbe752460c6548596d841e91f1e SHA-256: 9dc2a13888b7716a80fba05e49be5b39fb02d9340bfa0e915a82601c89d7a9cc
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a prominent link that, when clicked, redirects to a malicious domain. The document body, though heavily obfuscated, contains text related to movie downloads, reinforcing the lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the embedded URL, and the ML classifier strongly indicates 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.com/wix?keyword=sanam+re+full+movie+download+hd+720p
    • https://cdn.shopify.com/s/files/1/0437/6425/2823/files/65030160717.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/nepojodudopafafupuzuwebon.pdf
    • https://cdn.shopify.com/s/files/1/0433/6638/3768/files/ribugoxiw.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2053/files/theupsstorelocal._com_2223.pdf
    • https://cdn.shopify.com/s/files/1/0429/6130/5756/files/47707023765.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3667/files/74856591434.pdf
    • https://static.usrfiles.com/ugd/9cfd0a_96e7bee84a964e918c79dbbee4d48f8a.pdf
    • https://static.usrfiles.com/ugd/b8c837_87f33e0bafed4d5fab536b8245b00c96.pdf
    • https://static.usrfiles.com/ugd/9ea91e_3ff95b914f1a41db81e73bd8392780db.pdf
    • https://static.usrfiles.com/ugd/ca9b0a_6795af791a904723a2b3e408c7ec9ca1.pdf
    • https://static.usrfiles.com/ugd/b11f6d_92b1c03c326d4ce2a3c6e5ab4213ea42.pdf
    • https://static.usrfiles.com/ugd/b8c837_257ff7cb4bf341fd9cb2c9f079d40954.pdf
    • https://static.usrfiles.com/ugd/df4650_b0df7c4a9fdf4665a2fac6b5edbab0fe.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_off0000919f.bin
ea932f97e0de414a56e55ea410146e66f4d9a32e0c62b8b80dbd0c4ac902a7b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x919F 5712 bytes
font_01_sfnt_off0000a4fd.bin
3e378deed099a41944f23dfd52943919d40ff6261064dc2308c992cf8f3cbabb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4FD 13784 bytes

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