Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab4f0f24c30722f5…

MALICIOUS

PDF

34.8 KB Created: 2020-09-01 05:03:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7935db9ae1249c8cc809ca3c295b132 SHA-1: f5d0b11b0896595ef4b6c9896c0e45858ae4d0fe SHA-256: ab4f0f24c30722f5cbd9a860e5b1467929800a0d3f333d7ea81be097f827095a
150 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, including a critical redirector link to 'ttraff.com'. This indicates a likely attempt to direct users to malicious infrastructure, possibly for phishing or malware distribution. The document body, though partially corrupted, contains the same search query as the redirector URL, suggesting a lure related to 'beauty school dropout piano sheet music'. No scripts were extracted from this sample.

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=beauty+school+dropout+piano+sheet+music
    • https://static.usrfiles.com/ugd/87a178_e19289e6ed6349c4b350c429d52ed9ac.pdf
    • https://static.usrfiles.com/ugd/b8c837_423da957b24945749e3364e832b5d02a.pdf
    • https://static.usrfiles.com/ugd/3ab5ed_706bdf08c9684bdca39216c893360c2d.pdf
    • https://static.usrfiles.com/ugd/d01287_1b614894893543c684df8832e5cb1df9.pdf
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/dapawitexenakukaboderotum.pdf
    • https://cdn.shopify.com/s/files/1/0434/6635/8934/files/how_to_create_a_readme_file.pdf
    • https://cdn.shopify.com/s/files/1/0435/9415/4146/files/78261494169.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5645/files/centralized_database_system.pdf
    • https://cdn.shopify.com/s/files/1/0432/9334/3912/files/50279659079.pdf
    • https://cdn.shopify.com/s/files/1/0440/0565/4686/files/handwriting_worksheets_for_first_graders.pdf
    • https://cdn.shopify.com/s/files/1/0433/7873/7302/files/rastafarian_history_pdf.pdf
    • https://cdn.shopify.com/s/files/1/0433/6579/3942/files/4890803684.pdf
    • https://static.usrfiles.com/ugd/5fd5c1_40a16b6e4a6342baacd587facbc44e88.pdf
    • https://static.usrfiles.com/ugd/65b209_0bb06a3c1c5749a4839cf8611c06d26a.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_off00004968.bin
51f08bdc784c6e47fe480c217501164c1944c7e3de9e4bba3b3f9df3cec2e6a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4968 5464 bytes
font_01_sfnt_off00005bdc.bin
4a290a759413a921642d7a56ffe692d5957f25fea17ffac8093f3eb2bb24a5f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDC 10192 bytes

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