Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e9ee185ce334ba7…

MALICIOUS

PDF

40.5 KB Created: 2020-08-24 20:00:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9bdff640a7f088e4c5bdf2891cd25d17 SHA-1: 34b2e7b880bb971dc1e35e2b1d19410896051abb SHA-256: 4e9ee185ce334ba751dcf97258330f1c01d5cb976727cd7f0d5cc2017636debb
150 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary malicious redirector URL pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and references a 'Hyperlipidemia guideline 2018', suggesting a lure to disguise the malicious intent. The presence of numerous Shopify-hosted PDF links further indicates a link farm designed to obscure the malicious destination.

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.ru/pify?keyword=hyperlipidemia+guideline+2018
    • http://files.amitycart.com/uploads/1/3/0/7/130739081/a5494ffb3fc.pdf
    • http://files.drmichelle.me/uploads/1/3/2/6/132683070/a95d5bc614.pdf
    • http://files.normaniclothing.com/uploads/1/3/1/8/131858592/vozegunowilulupezej.pdf
    • https://cdn.shopify.com/s/files/1/0433/4754/2175/files/descriptive_research_paper_sample.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/disilapugifadevoregipe.pdf
    • https://cdn.shopify.com/s/files/1/0433/5104/8357/files/23229258852.pdf
    • https://cdn.shopify.com/s/files/1/0427/6345/2583/files/zewegunotas.pdf
    • https://cdn.shopify.com/s/files/1/0433/7994/9718/files/29079957780.pdf
    • https://cdn.shopify.com/s/files/1/0430/3113/4365/files/42777610638.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/wuzupavupenedijuratoxoga.pdf
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/tisuwoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7664/9124/files/steam_boiler_operation_and_maintenance.pdf
    • https://cdn.shopify.com/s/files/1/0434/5335/0040/files/barabanki_map.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_off00005e95.bin
1111880bffa2bbd2d40d3d0f5c2b0de327892da9d50bde6b12fe9cb6b6a9c752		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E95 5684 bytes
font_01_sfnt_off000071de.bin
904417501f9064ff0828309c53f0a1edf0acda1269fbbb8efe8d3c644554696a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71DE 10512 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.