Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ce6c41881d32b3…

MALICIOUS

PDF

43.6 KB Created: 2020-03-20 15:09:05 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1e01d99f5348b63d490ab7cf35037e8c SHA-1: a96a576c8596020cda66912087effad88d9ef34b SHA-256: 09ce6c41881d32b350c0bf5d890ab3cd27791212469356a0c6cecc2b8a007430
96 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or distribution mechanism. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is not benign. The primary attack pattern involves directing users to a multitude of external 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://teamgls.com/uploads/1/3/0/6/130604620/130604620.html#definicion+de+personalidad+segun+varios+autores
    • http://adagedanceanddrama.com/uploads/1/3/0/6/130621786/5528217.pdf
    • http://seanhaseymassage.com/uploads/1/3/0/4/130436399/tezupopuvexipod.pdf
    • http://bravaentertainment.net/uploads/1/3/0/6/130604088/nusofuvogijarefubala.pdf
    • http://sltkr.com/uploads/1/3/0/3/130323547/zetimowome.pdf
    • http://oceanoave.com/uploads/1/3/0/6/130639712/wapudiku.pdf
    • http://davesdawgs.net/uploads/1/3/0/4/130483739/rodavafiri-bezuzix.pdf
    • http://lightningreleases.net/uploads/1/3/0/3/130313166/353577.pdf
    • http://cindyzabinski.com/uploads/1/3/0/5/130590322/ledawifobimax_pozojun.pdf
    • http://www.rizzo-ela-portfolio.com/uploads/1/3/0/3/130313340/tarafi-zedolanuga-mufin.pdf
    • http://bayareaboatandhomeloans.com/uploads/1/3/0/7/130740127/72da4.pdf
    • http://mta-sts.mail.wroeh.org/uploads/1/3/0/6/130604371/f4312ea427f09e.pdf
    • http://bashfitness.com.au/uploads/1/3/0/6/130621706/fixilupanumix_bemolivi.pdf
    • http://sheffieldlaptoprepairs.com/uploads/1/3/0/7/130776888/wubonoleleva_ditumezedomomo_fewejatedirozab_xakadakisatetes.pdf
    • http://mshullsenglishclass.com/uploads/1/3/0/8/130814673/3047636.pdf
    • http://mynaturalplace.org/uploads/1/3/0/5/130551967/gegujaxam-figurepuzoremil-napanunel-dapubit.pdf
    • http://bellacapella.info/uploads/1/3/0/5/130545185/bukikite.pdf
    • http://mylittleponcho.ca/uploads/1/3/0/4/130483879/d8d6e55004571.pdf
    • http://bossasrx.com/uploads/1/3/0/5/130588754/6396269.pdf
    • http://mlrosynek.com/uploads/1/3/0/8/130813972/xavugej-bofagi-patopaxejuju-vogagi.pdf
    • http://myhappyeverydaylife.com/uploads/1/3/0/5/130588744/cd463f.pdf
    • http://tfrancisentertainment.com/uploads/1/3/0/3/130379675/mibuxixolekuk.pdf
    • http://nickdent.com/uploads/1/3/0/5/130539679/xudat-sexovigasabi-metaxi.pdf
    • http://www.easyspisa.com/uploads/1/3/0/6/130620820/natowukomugeri.pdf
    • http://vilhelmiina.com/uploads/1/3/0/6/130620772/7111703.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_off0000829b.bin
11374c8f351eb54300f9b914c5aca2135be2c621e335de0bbd229d5b8bccc489		 pdf-font-stream PDF embedded font (sfnt) at offset 0x829B 8224 bytes

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