Malicious PDF — malware analysis report

Static analysis result for SHA-256 a48b7a85f4e47027…

MALICIOUS

PDF

38.0 KB Authoring application: PDFedit
MD5: b9428bc185379153b73164e5ac673973 SHA-1: 8b6c867860baca729747018758c71a5295c14d21 SHA-256: a48b7a85f4e47027f20c7e55f6c996a351b5ef7ec2d7edef2e3ccd62b6f397c7
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to redirect users to malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the 'PDF_SEO_LINK_FARM' heuristic strongly indicate a malicious intent related to traffic redirection or phishing. The ML classifier also flagged this PDF with high confidence.

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://andreartwork.com/uploads/1/3/0/6/130640049/tefexevugajewale.pdf
    • http://myeduzone.org/uploads/1/3/0/7/130776617/kukalukukowa-retataziri.pdf
    • http://wildoncherrysalon.com/uploads/1/3/0/4/130489465/posabilovogivesew.pdf
    • http://mail.korinicolewilliams.com/uploads/1/3/0/7/130739105/728229.pdf
    • http://rolandkays.org/uploads/1/3/0/6/130604188/gotexo-wovegenalitimud-vakenozixore-wejogoxidotogu.pdf
    • http://morelopostfilms.com/uploads/1/3/0/6/130605255/8264573.pdf
    • http://ramitaleencafe.com/uploads/1/3/0/6/130621058/8590317.pdf
    • http://mydrivingschoolga.com/uploads/1/3/0/5/130539403/tekez.pdf
    • http://myangelabartlett.com/uploads/1/3/0/3/130379133/31c8b2.pdf
    • http://brookeholden.com/uploads/1/3/0/4/130476200/1030916.pdf
    • http://christianambulancenetwork.com/uploads/1/3/0/6/130604182/xirosele.pdf
    • http://tigermothmedia.co.uk/uploads/1/3/0/7/130776526/kigunuzop.pdf
    • http://gadgetgrump.com/uploads/1/3/0/3/130379479/9340977.pdf
    • http://newportplant.com/uploads/1/3/0/2/130272424/342a08403844a7.pdf
    • http://tccstories.com/uploads/1/3/0/6/130604907/ba76e2ed6ea9b.pdf
    • http://casualmondayscomedy.com/uploads/1/3/0/7/130776756/7511098.pdf
    • http://xileart.com/uploads/1/3/0/6/130639498/c481c50bdca2.pdf
    • http://walkiesnairn.co.uk/uploads/1/3/0/7/130776646/latiwenup.pdf
    • http://abstractfact.com/uploads/1/3/0/5/130550754/pijazamiwe.pdf
    • http://rebeccasmithinc.com/uploads/1/3/0/6/130604010/8f6b33.pdf
    • http://www.thehikinghousewife.com/uploads/1/3/0/3/130312986/dapamotibadi_gaxaxi_kepibinir.pdf
    • http://koawarriors.com/uploads/1/3/0/6/130603767/kifasifazapumez.pdf
    • http://politicskilleen.org/uploads/1/3/0/7/130740538/fed45b8747291.pdf
    • http://oldtownimports.com/uploads/1/3/0/5/130541677/7498026.pdf
    • http://sufistudies.org/uploads/1/3/0/2/130272390/kolebegif-lolekuxovelolet-nerirutanitifef-paxozakoj.pdf
    • http://1tei2.slpny.com/uploads/1/3/0/6/130603917/130603917.html#update+function+module+example+in+sap+abap

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003012.bin
7f7f2056cfc923a137977db9df3977f054b95545fb35522baf0b9b78dc7cc5d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3012 7896 bytes

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