Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa022aa97c07a8d…

MALICIOUS

PDF

44.4 KB Created: 2020-07-23 13:38:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c06a20ccdf7b08936d4c7a17314f4478 SHA-1: 2cd315c2a736a824066228bec671abbaa2f6dfa0 SHA-256: 9fa022aa97c07a8dadd9cc0a0bc68fa1ca6ae86ce2833be2cf3df2325653bf31
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to reference movie-related content, suggesting a lure to entice users to click the malicious link. The presence of numerous external PDF links further indicates a link farm strategy, likely to obscure the ultimate 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.com/pify?keyword=panchatantra+kannada+movie+song+free
    • http://files.twamemorybook.com/uploads/1/3/1/3/131398076/pulumusi_dofisogubutu.pdf
    • http://files.frankklohr.com/uploads/1/3/2/8/132814146/pedutowor.pdf
    • http://files.foreveryseason.net/uploads/1/3/1/1/131164016/fonoremoj-kolixewe-sotewora-koxiduxebafabap.pdf
    • http://files.foreveryseason.net/uploads/1/3/1/1/131164016/fonoremoj-kolixewe-sot
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/mulugaroguvila.pdf
    • https://cdn.shopify.com/s/files/1/0431/1603/6257/files/jijutar.pdf
    • https://cdn.shopify.com/s/files/1/0437/6595/6760/files/82537778141.pdf
    • https://cdn.shopify.com/s/files/1/0437/3302/4929/files/59999277985.pdf
    • https://cdn.shopify.com/s/files/1/0438/2726/5693/files/ligolaza.pdf
    • https://cdn.shopify.com/s/files/1/0432/1473/3480/files/29182975208.pdf
    • https://cdn.shopify.com/s/files/1/0434/3562/2552/files/vefexuruzunosi.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/zuwixogomifiloduto.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/25759130516.pdf
    • https://cdn.shopify.com/s/files/1/0431/6489/3344/files/31016597584.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/5852813283.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_off00007018.bin
165d00df3635efaebc3e02e7b4e56b9b3dea53e22dc55310041234febb3b2d04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7018 5316 bytes
font_01_sfnt_off000081fc.bin
a0d0794ddf0fcdaf8052ac87fe76527333447dc741794d8107348d5467899172		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81FC 10124 bytes

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