Malicious PDF — malware analysis report

Static analysis result for SHA-256 0268d6da2a3609f8…

MALICIOUS

PDF

40.1 KB Created: 2020-03-28 02:59:54 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 027e5da13d3d102d86a50598d9ec777f SHA-1: ef338e999788c60671d0233b32bb7042405c0632 SHA-256: 0268d6da2a3609f833bdc4a64ca0ae94e23a0e28bce7c928f3b3268a594ec783
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The PDF contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or a distribution mechanism for further malicious content. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous external URIs supports this assessment. No scripts were extracted, but the sheer volume of outbound links suggests an intent to redirect users to potentially harmful resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://foreverfitnessco.com/uploads/1/3/0/7/130775515/130775515.html#conversaciones+con+dios+1+2+3+pdf
    • http://summitnd.com/uploads/1/3/0/5/130543764/c3e148c9.pdf
    • http://bitcoin4life.net/uploads/1/3/1/4/131406843/poxamizim-nejisasugepoviw.pdf
    • http://emigrateawayusa.com/uploads/1/3/0/6/130603690/3267533.pdf
    • http://theruinsfilm.com/uploads/1/3/1/1/131164355/856918.pdf
    • http://truecomponents.net/uploads/1/3/0/6/130620788/xubolubur-pamakodedabod-wilikufu-lamip.pdf
    • http://brandonjacksonforthefourth.org/uploads/1/3/0/6/130620764/repigigisixeseju.pdf
    • http://theabsurdists.com/uploads/1/3/0/7/130739142/loridogunim_gapilitu.pdf
    • http://sarahsbeautybox.net/uploads/1/3/0/5/130551754/6a3f1a63d.pdf
    • http://www.asbuiltinformer.com/uploads/1/3/0/6/130639791/b94c1bc9a0076.pdf
    • http://preservedbeauties.org/uploads/1/3/0/5/130545278/4d165124e34.pdf
    • http://iveryrealestate.com/uploads/1/3/0/3/130379272/2019188.pdf
    • http://sslcommunity.com/uploads/1/3/0/4/130476089/ratanasebi.pdf
    • http://whisperinthestorm.com/uploads/1/3/0/6/130604320/munelomazol.pdf
    • http://www.lucasmidisbr.com/uploads/1/3/0/5/130544090/nazakal_tuxabapibal_jovalakavasori_zojetaf.pdf
    • http://creekviewanglers.com/uploads/1/3/0/7/130739017/3526118.pdf
    • http://db01.en-linea.com/uploads/1/3/0/7/130740244/4735434.pdf
    • http://eckmalaysia.com/uploads/1/3/0/6/130639603/2001569.pdf
    • http://fireantassassins.com/uploads/1/3/0/5/130543798/7129536.pdf
    • http://caroltreadwell.com/uploads/1/3/0/8/130873983/jimitimusisu-zupajinosotisa.pdf
    • http://dee-liciousdesserts.com/uploads/1/3/0/8/130874012/raserubuwo-zisugogopefuxij-munuxa-nenirowaritat.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_off0000718c.bin
e25601d6841182ed496d5fbce43bf3674e00f6a192063a018aeeedfc2096a92d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x718C 8688 bytes

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