Malicious PDF — malware analysis report

Static analysis result for SHA-256 644ed95ca5d75ffd…

MALICIOUS

PDF

34.9 KB Authoring application: Pdftk
MD5: 0b8eb4ecd0c2051cb12fab191662c5d1 SHA-1: 2a192bc18807e5934ac0f5c0ec36539090113afe SHA-256: 644ed95ca5d75ffdaf3a3060dbbdebfd337bcdeda59fb2c8fba10da9fec96fb3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are likely used to distribute further malicious content or for SEO spamming purposes. No scripts were extracted, but the presence of numerous external links suggests a phishing or spamming campaign.

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://www.pokeplayerhq.com/uploads/1/3/0/6/130621709/b420fe4bc649.pdf
    • http://nomorejoemoore.com/uploads/1/3/0/2/130288441/vebad.pdf
    • http://888claim15.org/uploads/1/3/0/7/130775156/7276301.pdf
    • http://gwwatersolutions.com/uploads/1/3/0/5/130543050/3197082.pdf
    • http://cashmorris.org/uploads/1/3/0/2/130289682/8711712.pdf
    • http://svdptc.org/uploads/1/3/0/6/130639557/df3c0a1e00.pdf
    • http://blitzmastery.com/uploads/1/3/0/2/130289756/rekiborarixikoz.pdf
    • http://muleartist.com/uploads/1/3/0/3/130313156/fabagetufoxuba_gegitepojorexo_zamujugas.pdf
    • http://thisisbinding.com/uploads/1/3/0/3/130312923/cbea650e.pdf
    • http://www.wordpress.elkethoms.com/uploads/1/3/0/3/130323518/07d8adbf7978f6.pdf
    • http://trafficlynx.com/uploads/1/3/0/4/130483552/058aa6.pdf
    • http://mychicagorides.com/uploads/1/3/0/2/130274322/8175603.pdf
    • http://americanfamilygolf.us/uploads/1/3/0/5/130545742/257d1899a56e16.pdf
    • http://www.dark-myst.com.au/uploads/1/3/0/6/130620233/kubovebenirubo.pdf
    • http://stepbystepfacilitationcenter.com/uploads/1/3/0/2/130289681/64664fe.pdf
    • http://bayareaspark.com/uploads/1/3/0/6/130621444/25679.pdf
    • http://poolservicesarasota.com/uploads/1/3/0/5/130542755/8708502.pdf
    • http://legacyteamchallenge.com/uploads/1/3/0/6/130639659/2014315.pdf
    • http://openskydigitalmarketing.com/uploads/1/3/0/8/130814229/dukixorugezenix.pdf
    • http://host46.carmichaelnl.com/uploads/1/3/0/2/130288762/130288762.html#graphing+absolute+value+functions+lesson+2-1+worksheet+answers

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002966.bin
8460e899e3fb2cb90b193b5ee5410229c2bc5e9cb3ffdf50f1521a16c8101ccc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2966 7964 bytes

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