Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff88cc07033a699…

MALICIOUS

PDF

35.7 KB Authoring application: PDFBox
MD5: a9f814dcb69a0ad3604236f7a5fe1ae5 SHA-1: f79ca1d4ed64d3a7db11d9db1609db2060c1b3cb SHA-256: 1ff88cc07033a699ad7878cb1ebcbe03751ca1502d2d611a902e81bf1940ab0e
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also indicate maliciousness. The embedded URLs are likely used to distribute further malicious content or for SEO manipulation. 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://agapeholisticaromatherapy.com/uploads/1/3/0/6/130639347/xisokosiwabefowode.pdf
    • http://free-space-arch.co.uk/uploads/1/3/0/9/130969339/2688edc0be6.pdf
    • http://nebraskafarmdog.net/uploads/1/3/0/8/130874207/denubomonajigukasoli.pdf
    • http://aninhastore.com/uploads/1/3/0/5/130550663/ec14c10abfec.pdf
    • http://skinsugarrx.com/uploads/1/3/0/2/130288630/9fc87.pdf
    • http://csjunioracademy.com/uploads/1/3/0/3/130379231/tutimasiwuzex.pdf
    • http://woodgatebeachkayakandpaddleboardhire.com/uploads/1/3/0/3/130323996/7032420.pdf
    • http://webmail.wafbc.com.au/uploads/1/3/0/6/130620510/72f82b65e78627c.pdf
    • http://homefindhd.com/uploads/1/3/0/8/130874634/7014934.pdf
    • http://bandmcrushers.com/uploads/1/3/0/4/130488779/1151418.pdf
    • http://hostmaster.tabletopto1million.org/uploads/1/3/0/6/130621194/2902573.pdf
    • http://sugarmaplecharcoal.com/uploads/1/3/0/6/130639643/3462397.pdf
    • http://bcsinmoohapkido.com/uploads/1/3/0/4/130435762/tobezajim_kikemuwejuju_wozijokedusexin_movivatoxosoz.pdf
    • http://silentcabinets.com/uploads/1/3/0/5/130551229/wewixoxutadukod.pdf
    • http://mta-sts.robulrichbrews.com/uploads/1/3/0/7/130776457/sozab-xatibofu.pdf
    • http://www.superduperfuntime.com/uploads/1/3/0/6/130620233/b73302c047e4b50.pdf
    • http://broadwaybakerycafe.info/uploads/1/3/0/8/130873994/3870683.pdf
    • http://charmingworldtours.voyagerwebsites.com/uploads/1/3/0/8/130813957/130813957.html#solving+multi+step+equations+worksheet+answers+algebra+1+2-3
    • http://bandmcrushers.co

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d08.bin
6b46ba0ebef629b5d39616172d002055d777754cb3fe9cc163038f9aff81d7a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D08 8416 bytes

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