Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc8267c052e83f37…

MALICIOUS

PDF

51.3 KB Created: 2020-08-07 10:14:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a66aaf843c512436f15d7cabd2e53bf9 SHA-1: b8ee9830032677007d19c8eb675b595fa01803c4 SHA-256: cc8267c052e83f3752c0c7ce5e0dda8fd9a82a6d0f331c968d11541de004d56e
150 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a critical heuristic firing for a malicious redirector link. This link points to 'ttraff.com', which is known malicious infrastructure. The document body contains text related to a 'bodyweight muscle building program pdf' and the wkhtmltopdf application, suggesting a lure to entice users to click the malicious link. 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/pify?keyword=bodyweight+muscle+building+program+pdf
    • http://files.jangrunow.com/uploads/1/3/0/8/130814923/tadewapudiwoxi.pdf
    • http://files.pterodactylaerospace.com/uploads/1/3/1/4/131454238/zabotasazonelapifeje.pdf
    • http://files.destinationally.net/uploads/1/3/2/6/132695343/8653187.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706
    • https://cdn.shopify.com/s/files/1/0434/0121/6163/files/96199595192.pdf
    • https://cdn.shopify.com/s/files/1/0434/7337/1288/files/browser_detection_javascript.pdf
    • https://cdn.shopify.com/s/files/1/0433/7431/3621/files/40890654940.pdf
    • https://cdn.shopify.com/s/files/1/0434/9476/8802/files/xowakotizenum.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/renaissance_architecture_in_italy.pdf
    • https://cdn.shopify.com/s/files/1/0432/3295/2477/files/la_boite_a_merveille_analyse_complte.pdf
    • https://cdn.shopify.com/s/files/1/0435/3723/6119/files/aldehydes_and_ketones_notes.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42479515564.pdf
    • https://cdn.shopify.com/s/files/1/0429/1733/1100/files/lerubolexiwip.pdf
    • https://cdn.shopify.com/s/files/1/0429/5157/3657/files/set_java_home_ubuntu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0816/files/biology_brooker_3rd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/5388/2280/files/13085149244.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_off00008833.bin
1f7cfa31fe9cba43e8090027ddc3f733dd4634a5e9257c62199d42acfcf9f86e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8833 5952 bytes
font_01_sfnt_off00009c67.bin
eee616edd9ec3761fedd32e9505b8920697db05dc1b5dcd2e8eeff4947dabdf2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C67 10376 bytes

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