Malicious PDF — malware analysis report

Static analysis result for SHA-256 608fba838cc6824c…

MALICIOUS

PDF

36.7 KB Authoring application: pdf-parser
MD5: 2469635a12b4a0165b9fedbae38ec6f0 SHA-1: e5f54518396c8f90e58f47cb8f215b7b4dcbd14a SHA-256: 608fba838cc6824c2154f8b8904f160160623ef02fb56907fa5a7b24c6565182
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs pointing to other PDF files, indicative of a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary IOCs, suggesting a campaign that relies on users clicking through to download further payloads.

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://kogway.com/uploads/1/3/0/5/130543156/xidimexexotisusudazi.pdf
    • http://southernrugs.com/uploads/1/3/0/2/130289240/kefuzesi.pdf
    • http://tradingblockadvisors.com/uploads/1/3/0/5/130543212/4019936.pdf
    • http://utuppercervical.org/uploads/1/3/0/2/130272443/lexab.pdf
    • http://juneau-dining.com/uploads/1/3/0/4/130490314/kotulanosel.pdf
    • http://www.viewsxvibes.com/uploads/1/3/0/2/130288549/rulopupewot.pdf
    • http://welcomehometoatmore.com/uploads/1/3/0/5/130588841/d9dc970621cb57b.pdf
    • http://srsfinancial.us/uploads/1/3/0/8/130814562/638005.pdf
    • http://amazingloveforever.com/uploads/1/3/0/4/130489001/f8135754.pdf
    • http://www.supreme1restorations.com/uploads/1/3/0/8/130814100/soroboja.pdf
    • http://ateliermarcantoine.com/uploads/1/3/0/5/130551775/d14ef0e846.pdf
    • http://thevidtip.com/uploads/1/3/0/4/130477193/jazonuviv.pdf
    • http://victorywebconsulting.info/uploads/1/3/0/3/130379205/8573029.pdf
    • http://www.petvolution.org/uploads/1/3/0/5/130590435/8509711.pdf
    • http://lawinarkansas.com/uploads/1/3/0/6/130621257/pibaja.pdf
    • http://myhtri.net/uploads/1/3/0/7/130739221/2103812.pdf
    • http://assric.org/uploads/1/3/0/7/130740164/4933700.pdf
    • http://summercollege4kids.org/uploads/1/3/0/7/130739930/522191.pdf
    • http://bellemeadedentalcenter.com/uploads/1/3/0/7/130739740/3052822.pdf
    • http://placerexteriors.com/uploads/1/3/0/6/130639061/67c01224bb9aef.pdf
    • http://emandlicustomdesigns.com/uploads/1/3/0/8/130813588/gofetuvonulozutevuda.pdf
    • http://chiavantage.com/uploads/1/3/0/6/130620509/xixapirizu_devinaxibes_zirivinoka.pdf
    • http://whitewatercottages.com/uploads/1/3/0/6/130621044/kuberinora.pdf
    • http://74-123-76-43.mgwnet.com/uploads/1/3/0/5/130550982/130550982.html#treatment+of+child+infection

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f1a.bin
f36193cb3a6086b06cbc6ff2479f2fd77e43abe7b1412a0cdb56915a7cd4f5c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1A 7280 bytes

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