Malicious PDF — malware analysis report

Static analysis result for SHA-256 9085ae766575c473…

MALICIOUS

PDF

39.7 KB Created: 2020-08-18 17:04:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ea906b490cb24f5b70abf603525a5a9 SHA-1: dc83909a044c152bc501c481cba0725f9d19c13b SHA-256: 9085ae766575c4735d25013c9722630df560f22db0c4522de9a4818468d8c970
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.com/pify?keyword=fly+ludovico+einaudi+sheet+music+piano', is likely a redirector to a malicious site. The document body contains garbled text but also includes the same malicious URL, suggesting an attempt to disguise or embed malicious content within seemingly innocuous text. No scripts were extracted, but the sheer volume of links points to a delivery mechanism for further malicious activity.

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=fly+ludovico+einaudi+sheet+music+piano
    • http://files.criticalstudies.org.uk/uploads/1/3/2/8/132815828/5997eef.pdf
    • http://jonirovo.debijones.co.uk/uploads/1/3/0/7/130738850/katima.pdf
    • http://gopugi.powermoves.org/uploads/1/3/1/6/131606027/sagoxefowe-wetobon-bezufame-bowosuvemuxi.pdf
    • https://cdn.shopify.com/s/files/1/0437/3273/0008/files/ronusumemaderumuwejega.pdf
    • https://cdn.shopify.com/s/files/1/0434/0944/0933/files/anny_duperey_le_voile_noir.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/palazasobaluligejokakutaf.pdf
    • https://cdn.shopify.com/s/files/1/0434/9352/3618/files/greater_than_or_equal_to_alt_code.pdf
    • https://cdn.shopify.com/s/files/1/0440/7069/9160/files/72049906534.pdf
    • https://cdn.shopify.com/s/files/1/0433/4108/6888/files/gumusozilejipemegasaz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0452/5720/files/adobe_reader_pro_app.pdf
    • https://cdn.shopify.com/s/files/1/0433/3672/8744/files/68761484974.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_off00004f69.bin
4e659681b5dcb8e8d626ea78a900908da48262986285b1ce76a1ecb25590604b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F69 5336 bytes
font_01_sfnt_off00006171.bin
69e00e880fc80654c00ab9f90522d27e10842a813aff89b6b7f678efa4808fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6171 15748 bytes

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