Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f9d9b09d981405a…

MALICIOUS

PDF

39.9 KB Created: 2020-03-31 19:45:46 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 1434a57c36b61309d4fef485b95a286c SHA-1: 5e9c3338fbfd99b645b5ff0d3f2b99c8d4044c1d SHA-256: 1f9d9b09d981405a570a42842ea96d590eeb7c9a0491f79eda15992f379a5f46
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a large number of external links, identified as a link farm. The primary link points to 'http://elizabethbrophy.com/uploads/1/3/0/3/130312973/130312973.html#permanent+accounts+in+accounting+list', suggesting a lure related to accounting or financial information. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous SEO-gateway links indicates a probable attempt to distribute malicious content or conduct phishing. No scripts were extracted from this sample.

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://elizabethbrophy.com/uploads/1/3/0/3/130312973/130312973.html#permanent+accounts+in+accounting+list
    • http://reinkelawoffice.com/uploads/1/3/0/8/130873868/4806284.pdf
    • http://poweredbyhoward.net/uploads/1/3/0/5/130545098/6134740.pdf
    • http://1911dev.com/uploads/1/3/0/5/130588639/zugavurovorunafozis.pdf
    • http://ispiked.us/uploads/1/3/0/5/130543141/d8399445ce0111.pdf
    • http://shopflares.com/uploads/1/3/0/6/130620314/xezadisidiso-farotulada.pdf
    • http://philadelphia-limoservice.com/uploads/1/3/0/6/130621890/vuzep_peraxe_gurorotevo.pdf
    • http://amberlyshantelle.com/uploads/1/3/0/7/130776061/xupuliledubaze_padixarowagef_tolatodaw.pdf
    • http://aleqoservices.com/uploads/1/3/0/9/130969389/6660699.pdf
    • http://nainarani.com/uploads/1/3/1/1/131163664/vobuzevawujaf.pdf
    • http://acevedomedicalconsultants.com/uploads/1/3/1/4/131438279/6586577.pdf
    • http://ambientaciones.net/uploads/1/3/0/7/130739956/vaxabepigam_sewenokerono.pdf
    • http://jenlore.com/uploads/1/3/0/9/130968925/gabunafok-walusigus-juxipoba-votakifeb.pdf
    • http://jacquipriestleyartist.com/uploads/1/3/0/5/130588482/7072372.pdf
    • http://weareoneflowyoga.com/uploads/1/3/0/4/130483351/vavesitudogarikimuf.pdf
    • http://www.flyyogastudio.com/uploads/1/3/0/7/130738801/3082f3c5cae.pdf
    • http://store.rebootvb.com/uploads/1/3/0/6/130639728/dewavupi.pdf
    • http://wilsonbeautystore.com/uploads/1/3/0/5/130589044/ledetadujarifemaron.pdf
    • http://attictreasuresbasketry.com/uploads/1/3/1/4/131453033/ziladot.pdf
    • http://curvyflix.com/uploads/1/3/0/6/130604016/0950469c366e6.pdf
    • http://immortal-scents.com/uploads/1/3/0/4/130491075/waderosuvofovat.pdf
    • http://vanite-lp.com/uploads/1/3/0/4/130476423/5987014.pdf
    • http://banerdesigns.com/uploads/1/3/0/2/130271206/patozuwepabami-dimatoju.pdf
    • http://australiaceal.com/uploads/1/3/0/6/130620382/44de707351fcb.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_off000074a7.bin
dc82ac12f90541a22d911462e58e586a62ce8ebeb7db1006438512d8dad15bf6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74A7 7408 bytes

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