Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f6cbb7e4fb49d85…

MALICIOUS

PDF

38.6 KB Created: 2020-03-14 12:56:29 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: afbc08b1b6d64d1312dea7786cb6e056 SHA-1: aeac794fc12d428b4fd84fd7fb246d92379d614f SHA-256: 1f6cbb7e4fb49d85dfd2f2a65ac9273a0f0415458f68635f5601758d36272fbd
92 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious. It contains a large number of external links, identified as a link farm, which are likely intended to redirect users to malicious sites. The primary attack pattern involves leveraging these links for phishing or malware distribution. 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://host121.carmichaelnl.com/uploads/1/3/0/9/130969306/130969306.html#fnac+report+of+thyroid
    • http://allfundesign.com/uploads/1/3/0/7/130739615/4897723.pdf
    • http://cpanel.tivestoboutique.com/uploads/1/3/0/8/130873893/navijusavotinu-libamujiduwapi-gemijoge.pdf
    • http://minimatisse.shop/uploads/1/3/0/4/130476053/bifesafinarawesen.pdf
    • http://positiefsamenwerken.com/uploads/1/3/0/6/130639669/valufitosux-pujuzo-xepalakoxom.pdf
    • http://elysiumpastures.com/uploads/1/3/0/4/130493143/5786380.pdf
    • http://www.healingcrystalwands.com/uploads/1/3/0/2/130289359/fakowinoredatilafe.pdf
    • http://vps16-anton.pleasingfood.com/uploads/1/3/0/3/130323255/gamoramak_xikuwotek.pdf
    • http://smdbsportsreport.com/uploads/1/3/0/6/130622025/9695650.pdf
    • http://greecejapan.net/uploads/1/3/0/4/130435937/welaj.pdf
    • http://excelappdevelopment.com/uploads/1/3/0/3/130323281/4bb9208e.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_off00006ec5.bin
27239c05d0bf40521a0a59fb695f9cab83e8caa234afede1c6ba47580a1548aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC5 8060 bytes

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