Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5cc6c9e2e5d275b…

MALICIOUS

PDF

37.9 KB Authoring application: QPDF
MD5: 98473ac8b1f80045a05a1286c87837cb SHA-1: 69bbbdb8062e46fbe83624a6686a92b019b900c0 SHA-256: c5cc6c9e2e5d275b07fa65d1bbb7acd1eb4bea54599107768b50052db204f9ef
150 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and a machine learning classifier assigned a high maliciousness score. Static analysis revealed a large number of embedded URLs, forming a link farm. These URLs likely lead to phishing pages or further malware downloads, consistent with a phishing or redirection attack.

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://instaadz.com/uploads/1/3/0/4/130489220/1288987.pdf
    • http://www.55688carce.com/uploads/1/3/0/7/130775969/9650363.pdf
    • http://agroricambi.com/uploads/1/3/0/6/130605203/molobemi.pdf
    • http://trinkaus.services/uploads/1/3/0/2/130272500/losewuwotapus.pdf
    • http://maximilianioan.com/uploads/1/3/0/2/130288542/fae4189fa0cd3f.pdf
    • http://pamstravelmagic.com/uploads/1/3/0/7/130739524/zejakegab-pelagu-dimitileba.pdf
    • http://autodiscover.nikkialexanderphotos.com/uploads/1/3/0/2/130289496/3605898.pdf
    • http://lovellabridal.net/uploads/1/3/0/5/130551554/8944245.pdf
    • http://mta-sts.mail.juuriart.com/uploads/1/3/0/5/130590229/sibomaxuwe_gagetonumajiji.pdf
    • http://bergenpropertyservices.com/uploads/1/3/0/5/130541733/70714377c.pdf
    • http://northernbeacheshousewash.com/uploads/1/3/0/4/130478057/kowofa-bipajemajed-siwefe.pdf
    • http://hostmaster.tmwsports.co.uk/uploads/1/3/0/8/130813509/9786729.pdf
    • http://maybachenterprise.com/uploads/1/3/0/3/130323727/9224604.pdf
    • http://organicdirt.net/uploads/1/3/0/4/130489247/1170405.pdf
    • http://cpanel.artbyholly.com/uploads/1/3/0/6/130620689/13c813d09ea7ba7.pdf
    • http://cerecdl.com/uploads/1/3/0/6/130639442/nojukezitawupi.pdf
    • http://www.compareenergyprice.net/uploads/1/3/0/4/130436054/93f50.pdf
    • http://taranakitimebank.nz/uploads/1/3/0/7/130775015/fovutitapafafa.pdf
    • http://myspiritlevel.co.uk/uploads/1/3/0/7/130775826/4af561a0415616.pdf
    • http://pingjiazuihaodeqipaiyouxi.br3h.com/uploads/1/3/0/8/130813999/130813999.html#christmas+reading+worksheets+for+kindergarten

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000337c.bin
c5648bd045fcd64faa99c8f6828893584d70bbc80e3c4130fdb16d5c8c67be07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x337C 8592 bytes

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