Malicious PDF — malware analysis report

Static analysis result for SHA-256 75456a091eedb6bc…

MALICIOUS

PDF

48.0 KB Authoring application: PDFedit
MD5: da8fb35f4ba60057a4bbe8312ea62c8c SHA-1: 8f2d5a9a36915ccbb8d9fb04630278aa1c7e1662 SHA-256: 75456a091eedb6bc805815b59df877e69418bf2a441c3a15f9f58d3de1d06535
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external link farm, with 31 links pointing to other PDF files, suggesting a SEO manipulation or content distribution scheme. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier's high confidence score further indicate malicious intent. While no scripts were directly extracted, the embedded URLs are the primary indicators of compromise.

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://reor.com/uploads/1/3/0/5/130551745/6775972.pdf
    • http://msfontes.com/uploads/1/3/0/5/130589366/dakikonulipume.pdf
    • http://canepaahclp.com/uploads/1/3/0/6/130604069/guteg_pufabapuvix.pdf
    • http://balance4yourlife.com/uploads/1/3/0/7/130740356/784b5.pdf
    • http://paperboyproductions.net/uploads/1/3/0/3/130313035/2af60f72.pdf
    • http://partywife.net/uploads/1/3/0/2/130271030/jeridalarunubosomek.pdf
    • http://www.artisticvb.com/uploads/1/3/0/2/130272070/femave_mivum_gibegat.pdf
    • http://maryandcompany.com/uploads/1/3/0/5/130539798/515be49f46.pdf
    • http://sclassified.net/uploads/1/3/0/7/130738911/ab41f806d22.pdf
    • http://josephdanielglobal.net/uploads/1/3/0/7/130738972/nisitirajubu_wubadubavebaz_numefefoxozokun_derupovoweguvab.pdf
    • http://nomadiu.com/uploads/1/3/0/5/130550744/tamizujoda.pdf
    • http://honeybeejs.com/uploads/1/3/0/8/130874591/rujuzuzuma.pdf
    • http://www.linguapatria.com/uploads/1/3/0/4/130476119/dakimolozabazijopenu.pdf
    • http://modernmoroni.org/uploads/1/3/0/5/130590356/wakugubimokulimuw.pdf
    • http://splashsteamboat.com/uploads/1/3/0/5/130543552/6bddd9066c60.pdf
    • http://visitnewberryfl.com/uploads/1/3/0/8/130874162/nemujinuvuwowo.pdf
    • http://translatemyblog.org/uploads/1/3/0/8/130814421/3278993.pdf
    • http://highlandsathiddenhills.com/uploads/1/3/0/6/130620451/vixunopesuvejokejo.pdf
    • http://shit-facedshakespeare.com/uploads/1/3/0/5/130551941/c471405338e9a5d.pdf
    • http://quadrangleofficepark.com/uploads/1/3/0/7/130738852/130738852.html#ap+si+previous+question+papers+with+answers
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000455c.bin
ca889182d22413b1a5b6446cd5d954c095bfc2c8b2fec1022b19199100617195		 pdf-font-stream PDF embedded font (sfnt) at offset 0x455C 16028 bytes
font_01_sfnt_off00005c7c.bin
219ae6069fdb3e1b72bf8a03725342d0e07bcc381f765751089e1a7677075791		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7C 8176 bytes

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