Malicious PDF — malware analysis report

Static analysis result for SHA-256 db407a298f75cd90…

MALICIOUS

PDF

39.5 KB Created: 2020-04-01 18:23:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 01c31dde87c32dab6fc1c32cf8843b9e SHA-1: 80dde55a344ecde49d1758aa4472426d92fc363a SHA-256: db407a298f75cd90f11f24cfc5874a78dd68dec66a4aed153af037028db5bc5d
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier strongly indicated maliciousness. The document body text is minimal and appears to be metadata or boilerplate, offering little insight into a specific lure. No scripts were extracted from this sample.

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://kissakirja.fi/uploads/1/3/0/6/130621075/130621075.html#ejemplos+de+medios+alternativos+de+comunicacion+en+argentina
    • http://appliedchiropracticoftroy.com/uploads/1/3/0/5/130588798/de2ec5.pdf
    • http://sustainshelby.com/uploads/1/3/0/6/130603842/bukowafobisax_kudonojeribaxiz_fakujujofozu.pdf
    • http://lubbockcarpetworld.com/uploads/1/3/0/4/130436244/jomezurosu_rukokab_zasos_dejupemo.pdf
    • http://vinliu.com/uploads/1/3/0/3/130323588/kelomiropawawofazewe.pdf
    • http://yourstrulyerikab.com/uploads/1/3/0/7/130740069/misetiwuwitajot_nijafu_jedarut_vodovabunoso.pdf
    • http://publicworksservices.com/uploads/1/3/1/1/131164297/d78351f723b68.pdf
    • http://gypsydenisse.com/uploads/1/3/0/2/130289392/gibelokerutimigabo.pdf
    • http://lettermanjacketsutah.com/uploads/1/3/0/8/130813799/degavudububaginuxu.pdf
    • http://supeshoppers.com/uploads/1/3/0/7/130776413/d3dbb6e82d1.pdf
    • http://imaginggrace.com/uploads/1/3/0/8/130815213/pikipolipu-fubekisivap-runifaxuk-zotigimuxuzede.pdf
    • http://doctorsandrarankin.com/uploads/1/3/1/4/131438776/321579.pdf
    • http://sbranchconsultants.com/uploads/1/3/0/7/130775013/1570538.pdf
    • http://pressurewashingtorrance.com/uploads/1/3/0/7/130776393/bivupe.pdf
    • http://wchahillclimb.com/uploads/1/3/0/7/130775046/rujaf.pdf
    • http://mail.pinegroveumc.com/uploads/1/3/1/3/131382590/4202586.pdf
    • http://juarezanabel.com/uploads/1/3/1/0/131070167/57935.pdf
    • http://imaraeats.com/uploads/1/3/0/7/130739806/sujoxesolonabi.pdf
    • http://hotpawsboardingkennel.com/uploads/1/3/0/9/130969742/302426.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070a1.bin
a66e7f140cc0681287711a2ece4168daf30ca8f78334b7898b0bc4bee8f2f470		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A1 7980 bytes

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