Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5f94ed9f5958c1c…

MALICIOUS

PDF

39.2 KB Created: 2020-08-30 15:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2280d4a8086123f86d26676fe6a2c39 SHA-1: 568b8161cb6bbdebf9e165d913a989c9475dc22c SHA-256: f5f94ed9f5958c1cd997b2ea15b23d61c0c80770d561be83bba7a410340edb77
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical heuristic firing for a malicious redirector. The embedded URL 'https://ttraff.cc/wix?keyword=trove+camera+snapping' is the primary indicator of malicious intent, likely leading to further compromise. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a lure to external content.

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=trove+camera+snapping
    • https://static.usrfiles.com/ugd/b8c837_b5f0a7616f2c4122a05a0dc4150c0a8c.pdf
    • https://static.usrfiles.com/ugd/eaf48f_a3b73e0314f24918a185fe34a0ae0be0.pdf
    • https://static.usrfiles.com/ugd/2c8d66_855f37aec06b4d04a9a4c95b75314518.pdf
    • https://static.usrfiles.com/ugd/3e9e83_1fb90d7757df4d7e904443464b87f77b.pdf
    • https://cdn.shopify.com/s/files/1/0438/9571/8040/files/european_resuscitation_council_guidelines_2017.pdf
    • https://cdn.shopify.com/s/files/1/0432/6054/3138/files/bowogumifawiwovuke.pdf
    • https://static.usrfiles.com/ugd/b8c837_115051585d174e71acad2c1513252438.pdf
    • https://static.usrfiles.com/ugd/0049ca_8a2e098c3bc5408e97f070fb8d5a9e02.pdf
    • https://static.usrfiles.com/ugd/b8c837_004721e6029e43778513f5a4f5f0b2a1.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/degolawapimaxuraturejoma.pdf
    • https://cdn.shopify.com/s/files/1/0435/4346/2037/files/nordictrack_c1800_review.pdf
    • https://cdn.shopify.com/s/files/1/0430/4306/1913/files/sidafiwabosibe.pdf
    • https://cdn.shopify.com/s/files/1/0457/7551/9910/files/nakikolibitikuvatedo.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_off00005104.bin
6b1886100909a5777bb30fc7b7be00bba8ed48ad5f5b392b7a0cb4783a0739ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5104 3016 bytes
font_01_sfnt_off00005bbe.bin
feb2cf1f7aec1d9fbfc751bfb7ffd55629048b73cd1f44cf59ba4050b4854612		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBE 5232 bytes
font_02_sfnt_off00006d7f.bin
e8114d959e81fbbfdcd344fc283a142df4cd46fdd7f4781d76b3c3199a692f64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D7F 10044 bytes

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