Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e45244ce7fa5463…

MALICIOUS

PDF

43.9 KB Created: 2020-04-09 09:14:25 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a8ad6e088a82d57fe89b9a9f8293c59a SHA-1: b3230ff3e9f4bd76e7cd66396fc1ccce2df2298e SHA-256: 4e45244ce7fa54634539598cd3de49a6e4a9fc0eb0e4489933d5e7756b07b275
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The 'PDF_SEO_LINK_FARM' heuristic specifically identifies this behavior, indicating a likely attempt to distribute or host malware across a network of generated domains. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://flaxpitsframpton.net/uploads/1/3/0/5/130544468/130544468.html#formula+del+area+de+un+rectangulo+equilaterosa
    • http://aworldinneed.org/uploads/1/3/0/7/130776233/xesewozorefu.pdf
    • http://filmwx.com/uploads/1/3/0/5/130550930/132069.pdf
    • http://stevenraga.nyc/uploads/1/3/0/2/130273617/woliwefititurefaxeka.pdf
    • http://idreamdestinations.com/uploads/1/3/1/4/131408103/zinenurivanilekulu.pdf
    • http://fjmusique.com/uploads/1/3/0/2/130289295/zafepixel_zujuvuzegenivuw_bewifater_kugilunoruf.pdf
    • http://thepivotacademyllc.com/uploads/1/3/1/1/131163664/6465624.pdf
    • http://aphconvergencenetwork.com/uploads/1/3/0/8/130814717/jukuweka.pdf
    • http://thecurlychelle.com/uploads/1/3/0/7/130775393/3213327.pdf
    • http://kohaiwellness.ca/uploads/1/3/0/8/130874118/lajajexatev-gugugibo-pisomimala.pdf
    • http://hollywoodmediacampus.com/uploads/1/3/0/2/130270905/4036101.pdf
    • http://westermediadesigns.com/uploads/1/3/0/9/130969960/zuzit-sagajuzemozikov.pdf
    • http://itcouldbu.com/uploads/1/3/0/5/130541688/xajimanit-neduvawajelabim-jagasakidudeve.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_off00006848.bin
1ca9d5d0b0737b2323ba7f8bdf875a9da4a38cac102f856c1d222a9b5f6b6c8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6848 9428 bytes
font_01_sfnt_off00008ab1.bin
564759fa447ddcc7d722a581d4247c7d2efc28703dfc5a719b56bb9b004a52ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB1 16200 bytes

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