Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c331b00223f66a7…

MALICIOUS

PDF

30.6 KB Created: 2020-04-03 13:59:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 6312d142ccc5ad923561d8d0ecd21a9a SHA-1: 38f1b491d2d03b54cd74aa34e181f1f49bd4179b SHA-256: 6c331b00223f66a76a26586dc6c8ecea2724f79fdad5cf687ea6dbcf8261e058
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many of which are structured as SEO spam or link farms, suggesting a malicious intent to redirect users. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports this assessment. While no scripts were explicitly extracted, the PDF structure and link farm heuristic indicate a likely attempt to drive traffic to potentially malicious sites.

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://downtownsound.net/uploads/1/3/1/3/131379021/131379021.html#books+by+florence+scovel+shinn
    • http://kimberlyjherb.com/uploads/1/3/0/7/130738614/5248642.pdf
    • http://shadedpines.com/uploads/1/3/0/7/130776201/kiwiwofijutuler_pitobeli.pdf
    • http://unforgettablepeople.org/uploads/1/3/1/3/131398252/dexenos.pdf
    • http://songhurstexperiment.com/uploads/1/3/1/4/131406970/2642635.pdf
    • http://azaziebenefits.com/uploads/1/3/0/9/130969654/e99e8aaebb8a61.pdf
    • http://lindakaren.net/uploads/1/3/0/7/130775726/524135.pdf
    • http://thetimetravelpundit.com/uploads/1/3/0/6/130639784/8577401.pdf
    • http://foxbound.com/uploads/1/3/0/8/130814387/192f3dbec3b8abc.pdf
    • http://plantbasedphysio.com/uploads/1/3/0/7/130775507/gagafaxopajuxukawup.pdf
    • http://harrymassey.com/uploads/1/3/0/2/130289254/528ca9df66b05b0.pdf
    • http://dpbossmatkaresult.com/uploads/1/3/0/4/130435597/zuzupalepawotav.pdf
    • http://helenatelford.com/uploads/1/3/0/9/130969586/9487727.pdf
    • http://empathizeothers.com/uploads/1/3/0/4/130488476/jobuja_tirarip_wubikisiju.pdf
    • http://kreativaprodukter.com/uploads/1/3/0/6/130603906/tujivosekewiva.pdf
    • http://nathanlyons.com/uploads/1/3/0/6/130620402/voromosefef.pdf
    • http://raventacticalaz.com/uploads/1/3/0/6/130604896/matimonukelazi.pdf
    • http://dotterwood.com/uploads/1/3/0/5/130539046/pujeton.pdf
    • http://sararaider.com/uploads/1/3/0/8/130814290/vufapajeg_xinopegesamibi_dixujomupi.pdf
    • http://darbylegal.ca/uploads/1/3/0/4/130490386/fb1852db93ec25.pdf
    • http://laerc.io/uploads/1/3/1/3/131382470/basabe-kuvumamuf-zamel-tojolemadow.pdf
    • http://quitanimaltesting.com/uploads/1/3/0/4/130435520/xulutunarifobun.pdf
    • http://belleandbeaucompany.com/uploads/1/3/0/6/130605353/4661469.pdf

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