Malicious PDF — malware analysis report

Static analysis result for SHA-256 661aa996e308a1ce…

MALICIOUS

PDF

38.3 KB Created: 2020-03-20 13:13:55 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3a69aa5fbffadd7853a5ea89ec890c47 SHA-1: bdf57c24ec5a95a88bb4213db2d7b28e52b96acf SHA-256: 661aa996e308a1ce117a5d65cc6fbbfd24851ebb0379ad46a6c26e4d5eebfab2
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the sheer volume of outbound links suggests a coordinated effort to drive traffic to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://alluneedonline.net/uploads/1/3/0/6/130639446/130639446.html#corriente+electrica+definicion+y+ejemplos
    • http://autodiscover.editor-ghostwriter.com/uploads/1/3/0/8/130873735/1163696.pdf
    • http://www.lmutridelta.com/uploads/1/3/0/7/130776539/vuxareni_wesitereru_bokutivogi_sazalemik.pdf
    • http://emilyyy.com/uploads/1/3/0/6/130603955/4180898.pdf
    • http://xxx666xxx.site/uploads/1/3/0/6/130621868/joletasadusodirisira.pdf
    • http://nickyarthur.com.au/uploads/1/3/0/4/130483872/e3f2ae4d.pdf
    • http://www.gomobileconference.com/uploads/1/3/0/2/130287211/puwanedajun_wifurelatenep_lefitit.pdf
    • http://gonewberry.com/uploads/1/3/0/3/130379798/d0a2d8d2b.pdf
    • http://www.morgancarsonisaslut.com/uploads/1/3/0/2/130270831/gawojaba.pdf
    • http://www.thecompoundenterprise.com/uploads/1/3/0/7/130775495/fitudibofaxajimaju.pdf
    • http://mikegfitch.net/uploads/1/3/0/6/130639563/d6e3278b8438.pdf
    • http://tradeshowsinphoenix.com/uploads/1/3/0/6/130620958/najizopakafano-wadenubo-lomupusemelo.pdf
    • http://fozzieoffical.com/uploads/1/3/0/5/130551184/1539144.pdf
    • http://timhamper.com/uploads/1/3/1/0/131070146/4953296.pdf
    • http://www.viridian-raven.net/uploads/1/3/0/7/130738596/6686973.pdf
    • http://jacobwholesalefoods.alfredschipsandsalsaexpress.com/uploads/1/3/0/3/130379769/9ae29254800ffe.pdf
    • http://cchsdigitalhistory.com/uploads/1/3/0/6/130620657/suzonipojebup-bupenotubez-zekafeluli.pdf
    • http://2catsinabox.com/uploads/1/3/0/7/130776185/3eadf400d67b928.pdf

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