Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c162cfc2efa963e…

MALICIOUS

PDF

43.1 KB Created: 2020-08-30 05:05:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a223b5cf82bb67c435281a40ad5b7075 SHA-1: 341f46474f5338ee542728ee8b399b92ff3429b6 SHA-256: 3c162cfc2efa963ef4cbfe0efac5c27a38c71db800a7bf5e96dbb2f5d04deba1
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a reference to the same malicious URL. The presence of a link farm heuristic further suggests an attempt to manipulate search results or traffic towards malicious content. 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=slipknot+duality+descargar+mp3xd
    • https://static.usrfiles.com/ugd/b8c837_bfbe03bef4f94b789c901e4f3cd1ffa9.pdf
    • https://static.usrfiles.com/ugd/89064d_6698a60035504543907a8f7972a0cf69.pdf
    • https://static.usrfiles.com/ugd/daca0d_bd4b907687f54dce9b1b278979be5e4f.pdf
    • https://static.usrfiles.com/ugd/02beb7_73487f9223e54bb48d55159bef4ad61f.pdf
    • https://cdn.shopify.com/s/files/1/0432/6077/2515/files/rotop.pdf
    • https://static.usrfiles.com/ugd/b8c837_5ddaf50a542a447f824ea37fce33aca3.pdf
    • https://static.usrfiles.com/ugd/544c7e_af69f70184c54c0e9f95a81b2ee14874.pdf
    • https://cdn.shopify.com/s/files/1/0432/0044/6626/files/ralotebolefuzez.pdf
    • https://cdn.shopify.com/s/files/1/0433/9043/5495/files/pisetotojojimumujusaleka.pdf
    • https://cdn.shopify.com/s/files/1/0430/0800/0163/files/fundamentals_of_python_first_programs_2nd_edition_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1947/6896/files/62390096078.pdf
    • https://cdn.shopify.com/s/files/1/0450/7284/2915/files/95623608405.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_off00005297.bin
5fe9ba24fac5b8e03514ae1a04bc2f61a1fb6edaddf5173d12d68923be785659		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5297 6376 bytes
font_01_sfnt_off000067e7.bin
86757e4f2c6505be59520ea270b359a4fcc9a3f49b093df8afdb90fc9fab8241		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E7 5892 bytes
font_02_sfnt_off00007be8.bin
9813954c4e1f4b1d5887189962590812e4697b6e622fca2a4e25acd7972ce4c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE8 10408 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.