Malicious PDF — malware analysis report

Static analysis result for SHA-256 68635c68c3c1e699…

MALICIOUS

PDF

67.8 KB Authoring application: OpenOffice Draw
MD5: 5131c1cb0154446e9062dd3d516607ba SHA-1: 9e9a1b30852ce77e442f40432947492396e2b1cb SHA-256: 68635c68c3c1e6994594c3ad563475a4dab87c40ee7e35530c89b57a1174f9d1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO spam or to distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. While no scripts were extracted, the sheer volume of linked PDFs suggests a coordinated effort to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://designdancestudio.com/uploads/1/3/0/6/130604428/b6d7129d7e826a7.pdf
    • http://mdslearnderm.com/uploads/1/3/0/6/130621176/nogimaxiget.pdf
    • http://krispykleanautospa.com/uploads/1/3/0/2/130289724/0abf676e3f0.pdf
    • http://northmiresouces.org/uploads/1/3/0/6/130621083/lizome_tidikukese_xinarogegi.pdf
    • http://garryandjen.com/uploads/1/3/0/3/130324158/zolubugefidixaxajex.pdf
    • http://matthewaedwards.com/uploads/1/3/0/2/130288684/donevufu-fupepej-jinafeza-wadolorubaba.pdf
    • http://mirasbigday.com/uploads/1/3/0/5/130541881/jumiva.pdf
    • http://natbayley.com/uploads/1/3/0/6/130605077/1727702.pdf
    • http://may-som.com/uploads/1/3/0/5/130540017/lawapu.pdf
    • http://deannaheathrealty.com/uploads/1/3/0/4/130478831/pavewip-pokizuf-fisata-raxepavefe.pdf
    • http://clbart.com/uploads/1/3/0/5/130539458/b58405a5cb76e.pdf
    • http://myblueprintforchange.com/uploads/1/3/0/5/130588517/kezupotizinik-jurasexofunixat-werexiwajib-talugetesekifo.pdf
    • http://iweargreatness.com/uploads/1/3/0/5/130588653/130588653.html#canibalismo+humano+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001493.bin
2ed214033d165b2406e8bded9f869e65d1a4d7443f0f9ca4b3950f9c8517cc97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1493 9724 bytes
font_01_sfnt_off0000bb55.bin
e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBB55 2652 bytes
font_02_sfnt_off0000c421.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC421 16036 bytes

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