Malicious PDF — malware analysis report

Static analysis result for SHA-256 246185302f6b030a…

MALICIOUS

PDF

41.1 KB Created: 2020-04-02 14:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: aaaccdef0cd5189804dfa8d7ae167c19 SHA-1: 488513f7b2f0ba1b362742e74c147237ff0c81ad SHA-256: 246185302f6b030a03149d867ff6e912b87d219a6ecf88fdbdf30028c33e2ba3
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 poisoning or to redirect users to malicious sites. The document body, though partially corrupted, suggests an educational theme, likely a lure. The ML classifier strongly indicated maliciousness, and the PDF_SEO_LINK_FARM heuristic confirms the presence of a link farm designed to manipulate search engine results.

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://angelamaxfield.com/uploads/1/3/0/3/130379354/130379354.html#proyecto+de+aprendizaje+de+lectura+y+escritura+para+segundo+grado
    • http://love4myskin.org/uploads/1/3/0/7/130738639/1594071.pdf
    • http://nataliegoldfein.com/uploads/1/3/0/5/130550782/f26c75d0345.pdf
    • http://crushhhstylingstudio.com/uploads/1/3/0/6/130603926/8617797.pdf
    • http://earthwarriorsfestival.com/uploads/1/3/0/6/130603971/pujijowe.pdf
    • http://martinbenatti.com/uploads/1/3/0/7/130738821/544753.pdf
    • http://kissyourcravingsgdbye.com/uploads/1/3/0/7/130775436/5132726.pdf
    • http://elsalvadorsaludable.com/uploads/1/3/1/1/131163927/bovefiz.pdf
    • http://jli-photography.com/uploads/1/3/0/7/130775729/jetotan.pdf
    • http://djdmj.com/uploads/1/3/0/5/130588343/cd7ac0.pdf
    • http://superscoreme.com/uploads/1/3/0/7/130739607/jikizifoxode.pdf
    • http://westhillsstoneworks.com/uploads/1/3/0/7/130738754/fosefetiweb-xabuzisik-dezavoti.pdf
    • http://equusmedical.com/uploads/1/3/0/6/130604799/virepaxu.pdf
    • http://hollywooddeathtour.com/uploads/1/3/0/5/130545447/180a2a7aba.pdf
    • http://sweetscents1.com/uploads/1/3/0/9/130969935/rizulumovobav_zezox_tolemonexa.pdf
    • http://lakefieldbaptistchurch.org/uploads/1/3/0/8/130874480/nemowuku.pdf
    • http://kuduproducts.com/uploads/1/3/0/5/130551094/c4f0b7a88ac58a0.pdf
    • http://animasanesthesiaconsultants.com/uploads/1/3/0/4/130475932/gofarulixonozes.pdf
    • http://starkvillehomesbyjerome.com/uploads/1/3/0/6/130639233/sesamufatulude.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_off00007756.bin
1dffce333fccf29e9c25a08a959f297d2fdeda50635a5f8ec8fc3dcf59e72404		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7756 8864 bytes

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