Malicious PDF — malware analysis report

Static analysis result for SHA-256 b658f0ffc15f2b63…

MALICIOUS

PDF

39.9 KB Created: 2020-03-10 07:29:04 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: bbc3336d0d9fb6bed58c171262cf9824 SHA-1: 5e08ac7171d79796b72daef731d56226f8aa69b7 SHA-256: b658f0ffc15f2b633d34d4e713d1cde63e876f423dfb022db4a2b57b0c4338db
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier strongly indicated maliciousness. The primary attack pattern involves leveraging these links to potentially deliver further payloads or conduct phishing, as evidenced by the numerous URLs pointing to suspicious domains. 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://74-123-73-7.mgwnet.com/uploads/1/3/0/6/130639082/130639082.html#ketoacidosis+treatment+ncbi
    • http://sima-se-design.com/uploads/1/3/0/8/130874235/vedasopek.pdf
    • http://poolcleaningserviceclermont.com/uploads/1/3/0/8/130873856/dexuwamoja-silevosol-vimijiwuw.pdf
    • http://thelimocompanynewportbeach.com/uploads/1/3/0/2/130289406/vafubure.pdf
    • http://optionsinvestmentsproperty.com/uploads/1/3/0/7/130775753/b8f63bd48b4.pdf
    • http://tooprettyforjail.net/uploads/1/3/0/5/130589373/verakapadatatew_koxinasunodo_pajesobe_tinebuxijuzakat.pdf
    • http://www.quanngonrenton.com/uploads/1/3/0/6/130621046/jodovewuxi.pdf
    • http://bermudawellnessfestival.com/uploads/1/3/0/6/130604525/sipajil.pdf
    • http://mail.openrangecandy.com/uploads/1/3/1/0/131069940/7b7d4f870f7e8.pdf
    • http://whyemedia.com/uploads/1/3/0/2/130287472/pimujobiritasafo.pdf
    • http://aivda.network/uploads/1/3/0/7/130739970/8514311.pdf
    • http://umrcsalem.org/uploads/1/3/0/8/130874430/sunuxedigugu.pdf
    • http://infinitycentralescorts.com/uploads/1/3/0/2/130288729/fobukawebelunubap.pdf
    • http://merryxmasgreetings.net/uploads/1/3/0/5/130588498/8026077.pdf
    • http://thomastrevethan.com/uploads/1/3/0/6/130639027/gevurazevu-wowemaranuvaw-tukokopizekegir-besamutenozesik.pdf
    • http://raverflavor.net/uploads/1/3/0/3/130313188/9205456.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_off0000733b.bin
ce1ca41a8852ecd52bdc08356867adfe8d49c782a64746bbf7ed7f3f93de460d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x733B 8120 bytes

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