Malicious PDF — malware analysis report

Static analysis result for SHA-256 049c2e850cb406b7…

MALICIOUS

PDF

41.8 KB Authoring application: Poppler-utils
MD5: 6651c19d0afef1c28c257c73dbe9fab6 SHA-1: 89bf59f678c265217325e589cf9034b8e160658d SHA-256: 049c2e850cb406b766d406452465f8723133ff8a68b6aae8651baa0be0c451ef
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. No scripts were extracted, but the sheer volume of external links suggests a coordinated effort to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bellemeadedentalcenter.com/uploads/1/3/0/2/130289313/1966425.pdf
    • http://paintinghopefoundation.com/uploads/1/3/0/6/130620868/039d1066d999.pdf
    • http://southamericarealstate.com/uploads/1/3/0/6/130639236/1231154.pdf
    • http://krgservicecorp.com/uploads/1/3/0/6/130620511/nubife-nalevepe-rufoxuguri-larafepurirolep.pdf
    • http://americalibertyforum.com/uploads/1/3/0/2/130273801/4b866417.pdf
    • http://wan.badcelebriz.fun/uploads/2020/01/29/kuvaxef.pdf
    • http://lampeelife.com/uploads/1/3/0/3/130379150/jiborujulage.pdf
    • http://kimbroughrehi.com/uploads/1/3/0/2/130274343/fdedcce1f7a.pdf
    • http://sake.faring8.net/uploads/2020/01/29/03398be8.pdf
    • http://alchemystvapes.com/uploads/1/3/0/2/130289515/pazitafibujad-sivelu-vanego-jikusomadinevuf.pdf
    • http://newoutsiderart.com/uploads/1/3/0/6/130639750/fametevexuzofez_baguj.pdf
    • http://victoriahunters.weebly.com/uploads/1/3/0/5/130545745/cb295d400.pdf
    • http://seizediem.com/uploads/1/3/0/6/130639646/130639646.html#pmir-+report+luciferase+vector+sequence
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014da.bin
68e1033429f1ba8b4446e8ba0a53b648a3ce223e76f6bb4c2984ba059395d08d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14DA 7532 bytes
font_01_sfnt_off000053b1.bin
b3affdfdfee497c2d3230853582529cf395d265bfdbb8cde7d84ae9c33602211		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B1 16036 bytes
font_02_sfnt_off000067ca.bin
63f5e27ee3d24cc00d413e59c301cc73ab377383609796993547673f2bea898c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67CA 2600 bytes

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