Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dfabe851ec3314d…

MALICIOUS

PDF

65.2 KB Authoring application: PDFBox
MD5: 40f30ada7c3a7ab630a20a71f7b9d399 SHA-1: 0e3aa0b54cb140524422bed1ab84fe3e4eb2db9c SHA-256: 5dfabe851ec3314d705e844d83d845baea10139b3ac443685b8ca97246d19ba3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a mass external link farm with 30 links, indicating a likely attempt to distribute malicious content or engage in phishing. The ClamAV detection and ML classifier strongly suggest malicious intent. The presence of a visual download button further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://royalbisonstudios.com/uploads/1/3/0/6/130603748/6296769.pdf
    • http://westernmasssti.com/uploads/1/3/0/6/130620863/a9d177d812ae7ea.pdf
    • http://30wallst.com/uploads/1/3/0/6/130604145/sixikokegisa_negeda_ginegatakeviso_soxozurisunabew.pdf
    • http://fiataudiosolutions.com/uploads/1/3/0/7/130739038/4541d6eec.pdf
    • http://niveditainstitutions.com/uploads/1/3/0/2/130288488/tasinexes.pdf
    • http://belindawabelo.com/uploads/1/3/0/8/130874264/dopexusigeziwi-negape-zifewip-badokiwap.pdf
    • http://kontrabecki.info/uploads/1/3/0/2/130291492/3bb6a396a51762f.pdf
    • http://fiercetruth.net/uploads/1/3/0/6/130621826/7992481.pdf
    • http://thepacketpusher.net/uploads/1/3/0/7/130775306/2020f6ce85613a.pdf
    • http://doitmovin.com/uploads/1/3/0/8/130814126/xonusasunimo.pdf
    • http://prismnpo.org/uploads/1/3/0/8/130813869/zerib-kewetatu-vanefejise.pdf
    • http://worldmaco.com/uploads/1/3/0/8/130873961/rigofaxovi_pumabikufej.pdf
    • http://motleydog.org/uploads/1/3/0/6/130639336/3008561.pdf
    • http://qgility.com/uploads/1/3/0/2/130271076/7463cee2.pdf
    • http://venns.net/uploads/1/3/0/5/130589002/c46bbb2ee6.pdf
    • http://thegapfestival.com/uploads/1/3/0/5/130546036/130546036.html#maths+important+formulas+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b32.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B32 16204 bytes
font_01_sfnt_off00006047.bin
72d57705b0ea39ef97555189885d6e56c8b9ce54766327624a7159537619e234		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6047 3616 bytes
font_02_sfnt_off00006c10.bin
1723f1ced37cc89d69e30f3df6281c5e5fb8989544fd4587aa75b00c91af2fd0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C10 1388 bytes
font_03_sfnt_off000075d3.bin
2d52eab4333c5dd419ee6227cb12c165b0df584c91f0a791ae6174610dd63d82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75D3 14556 bytes
font_04_sfnt_off0000a03f.bin
80bd0488356faa5d44777629d0481ba2a63a863656466fed8c456d8782cbbd1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA03F 9680 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.