Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc50d1a789621923…

MALICIOUS

PDF

69.9 KB Created: 2020-08-29 01:07:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de9d8f906e46ba1b929b8a4df656b324 SHA-1: 26a99209e0814d68fd153bc36c14383fb3c4e9bc SHA-256: fc50d1a789621923649ff0b90b320441eaac3b1416dd73f7a567612c3eacdc32
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=sim+brothel+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links. The presence of a 'download button' heuristic suggests a lure to encourage user interaction. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=sim+brothel+guide
    • https://static.usrfiles.com/ugd/b8c837_c1920bac43bc4cbc9166c3adc1abea13.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad319baeaa3f4a14b46fe1e02621a7ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_72ac00d833ba4b14b2a37e71ec36f944.pdf
    • https://static.usrfiles.com/ugd/b8c837_b92ffcb4554d4a0eb8ac501740fb54d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_ebfe44e4ad984da08e15a64926d64bb2.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb275e7da9c0471490bf517e1f9ab0d3.pdf
    • https://static.usrfiles.com/ugd/b8c837_80b834759d2c4e9b943af6c63b8f4b64.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e60ee4fc6f5484e9be09e64f796be54.pdf
    • https://static.usrfiles.com/ugd/b8c837_28acea3de6f24adc96ab9e276cec3be0.pdf
    • https://static.usrfiles.com/ugd/b8c837_3b188d951f0349f983529584b1848866.pdf
    • https://cdn.shopify.com/s/files/1/0431/6623/6826/files/95195067880.pdf
    • https://cdn.shopify.com/s/files/1/0431/1931/3053/files/zifelekarofesamiwa.pdf
    • https://cdn.shopify.com/s/files/1/0434/9257/3336/files/asma_ul_husna_khassida.pdf
    • https://cdn.shopify.com/s/files/1/0435/3038/7607/files/tuxemevumixu.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_off0000d516.bin
a8379a698c2299b28909ef90a77e53edba862c9a280377c65bd64efe67b24712		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD516 5092 bytes
font_01_sfnt_off0000e63b.bin
d826e96579fdde2e25ed94441927837aa2db3eaacb5ff9ebbabd3f64b491c72f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE63B 10936 bytes

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