Malicious PDF — malware analysis report

Static analysis result for SHA-256 449cf92100bd0710…

MALICIOUS

PDF

51.8 KB Created: 2020-08-18 16:13:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0580671cb03a9bba958bd1b8a7cd8167 SHA-1: 33c094eb532ab90a7ba99299e61e2908270c3cfa SHA-256: 449cf92100bd0710d738b4c046289ba2ff11402a78a130db508378eacf372004
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in Systems

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, suggesting a link farm. The primary malicious URL identified is ttraff.com, which is known to host redirector infrastructure. While the document body contains garbled text, the presence of the malicious URL and the link farm heuristic strongly indicate an attempt to direct users to harmful 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.com/pify?keyword=23+ideas+de+navidad+2019+manualidades
    • http://files.martinisdigz.com/uploads/1/3/1/4/131437508/bavagul.pdf
    • http://xakaledos.dorsettrailtourismassociation.com/uploads/1/3/0/7/130776485/vuzufedumezixifim.pdf
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/jonagejubokuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49893706483.pdf
    • https://cdn.shopify.com/s/files/1/0433/2378/5370/files/final_year_projects_for_electronics_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/5355376297.pdf
    • https://cdn.shopify.com/s/files/1/0440/7764/5974/files/creative_brochure_designs.pdf
    • https://cdn.shopify.com/s/files/1/0434/9175/4149/files/puruwujitovavom.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/mesefifevi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8129/3221/files/lijagejokawelifavumop.pdf
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/tudunofod.pdf
    • https://cdn.shopify.com/s/files/1/0432/2204/0731/files/general_affidavit_template_ontario.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_off0000740c.bin
21eea0461fd5ac1475f88eabdfeebede70f7dd9c6d179925a6eb544ae9b80a34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740C 5488 bytes
font_01_sfnt_off0000869a.bin
d613ffca8bd9ab5d6133b36eac9cd8397dab18e8505d4c71035bf8a9248b5aab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x869A 11412 bytes
font_02_sfnt_off0000abd9.bin
d36da4fd2ab8c4dd3ac6c046b788d156341ebfd1121c5e6b8b5107a79d777502		 pdf-font-stream PDF embedded font (sfnt) at offset 0xABD9 16080 bytes

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