Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e87a62b9357c1bb…

MALICIOUS

PDF

33.9 KB Created: 2020-03-30 04:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b3d05fbe056f13f7b22203457e32a313 SHA-1: 07379dc67b0af41cedb10e8c32ebcb90930dce76 SHA-256: 7e87a62b9357c1bba6e49dd06a1658b1799d8847d4f39784a6cd83f564109dac
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links to various domains, indicating a link farm or SEO spamming operation. The embedded URLs and the heuristic 'PDF_SEO_LINK_FARM' suggest the primary purpose is to redirect users to a network of sites, potentially for advertising, phishing, or hosting further malicious content. No scripts were extracted, but the presence of numerous external links points to a malicious intent to redirect users.

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://estudio-thuban.com/uploads/1/3/1/4/131453194/131453194.html#generac+guardian+14kw+manual
    • http://bigcashloads.com/uploads/1/3/0/7/130775851/liwijojejavod_numusek_xozituguxokozi_pojugi.pdf
    • http://trjjcafe.com/uploads/1/3/0/5/130539311/ponurapexeg_nupepezo.pdf
    • http://kenyikrea.com/uploads/1/3/0/4/130488979/pofiruxegav.pdf
    • http://soloptometry.com/uploads/1/3/0/6/130639728/7432538.pdf
    • http://twf.agency/uploads/1/3/1/3/131384674/tusexiniju.pdf
    • http://gossiplashes.net/uploads/1/3/1/1/131164545/sifipujutijovok_tivas_tosuwi.pdf
    • http://tryggra.com/uploads/1/3/0/6/130605218/fulabezomod_jokofirovotin.pdf
    • http://rossihdf290.com/uploads/1/3/0/8/130874084/xujanakovaja-xijedevepamo.pdf
    • http://bluecalliopepublications.com/uploads/1/3/0/7/130740218/tirigivabapaw-domut-funenekum-denigu.pdf
    • http://wannascience.com/uploads/1/3/0/7/130739715/piwagerunesaxar-kageboneseki.pdf
    • http://vtsouthindian.com/uploads/1/3/0/7/130775163/6728075.pdf
    • http://ns.bethalto.org/uploads/1/3/0/5/130545199/ditobuz.pdf
    • http://friendsoflarryhouseholder.com/uploads/1/3/0/6/130620853/kibenomafap.pdf
    • http://consolvo-gmbh.info/uploads/1/3/0/6/130621734/bdffb95b.pdf
    • http://hostmaster.eukay.com/uploads/1/3/0/5/130590637/nutow-welilipobug-wowigom-japopinopovexi.pdf
    • http://lorilearnardart.com/uploads/1/3/0/2/130288818/finenepapagegofoxu.pdf
    • http://targheebaptistchurch.com/uploads/1/3/0/7/130775474/3025ff8.pdf
    • http://gloversgarden.com/uploads/1/3/0/6/130639936/redugakis.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_off00005f34.bin
87c4d677a57189bb49bf168666525c33a5d1c7d5f8a53508f4d5f38e4b30a1fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F34 6920 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.