Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd643f2002457bed…

MALICIOUS

PDF

34.8 KB Authoring application: Karbon
MD5: bb640c3f629ce86ec1aa8bb59d711cbc SHA-1: f76baa80f2723b3d524255d90667ada18d3e6240 SHA-256: fd643f2002457bed26a04429a8d039fa8983274c059383dbeaca44c68c8467dc
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a critical finding for a large number of external PDF links, suggesting a link farm or content hosting strategy. The ML classifier and ClamAV detection further support its malicious nature. The embedded URLs likely serve as lures or redirect to malicious payloads, consistent with phishing or SEO-based malware distribution. No scripts were extracted from this sample.

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://advancedsteeldetailingltd.com/uploads/1/3/0/4/130483409/800a646.pdf
    • http://cococarinamk.com/uploads/1/3/0/2/130289319/9735933.pdf
    • http://efficientandeffectivepodcast.com/uploads/1/3/0/3/130324340/wolifatitonur.pdf
    • https://bolifugiz.weebly.com/uploads/1/3/0/5/130590436/jaluvarodedaladato.pdf
    • http://sonjaweilguny.at/uploads/1/3/0/4/130483309/3574083.pdf
    • http://powerapo.apsmoney.com/uploads/2020/01/28/sozufikilu_remuki_gebovekimuva_zilitowov.pdf
    • http://northeasternohiomasonry.com/uploads/1/3/0/4/130476572/6ec3e45ccb1.pdf
    • http://strozzistawzeeh.com/uploads/1/3/0/4/130488229/d1ebe93c6e1139a.pdf
    • http://beyondinclusion.org/uploads/1/3/0/6/130603892/mokoki.pdf
    • http://lbeckerle.com/uploads/1/3/0/6/130603823/bafawodureva_gigekudagoneves_fimafasilija.pdf
    • http://lenceriavanity.es/uploads/1/3/0/6/130604165/zadojabedatazaxu.pdf
    • http://xoveto.gg-jewelry.ru/uploads/2020/01/27/4949891.pdf
    • http://thesongwritercircle.com/uploads/1/3/0/4/130476485/5400671.pdf
    • http://hollandfoto.com/uploads/1/3/0/5/130540296/4eab9e6367763d.pdf
    • http://amaebellingham.com/uploads/1/3/0/2/130274301/feveniw-gusapoxu-doketulidiliwe.pdf
    • http://vus.lacuinavalencia.com/uploads/2020/01/28/sibopudejiwero.pdf
    • http://dekabulab.sapphiremarket.org/uploads/2020/01/27/miwinalaxexi.pdf
    • http://people.co.nz/uploads/1/3/0/5/130551864/5044187.pdf
    • http://merx-group.com/uploads/1/3/0/4/130483697/jemutoji-xuwogebunet-wovevazejerod-pezemasosimire.pdf
    • http://sista-dolls-vibrations.com/uploads/1/3/0/6/130604723/fdda43.pdf
    • http://almultiservices.ca/uploads/1/3/0/4/130489055/zisez_gibiviseve_xapesab_xenib.pdf
    • http://colorfulmindsaustin.net/uploads/1/3/0/3/130313228/2c177728cb9a9a.pdf
    • http://trouthide.com/uploads/1/3/0/2/130272266/berugumitak.pdf
    • http://beingself-centered.com/uploads/1/3/0/4/130488700/130488700.html#barnaba+washa+song+video

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001768.bin
93a78754521efb28a0d3f120f144dbbe8aa5f3b094facafe0170a68159713114		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1768 8044 bytes

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