Malicious PDF — malware analysis report

Static analysis result for SHA-256 69e2dd8170dac659…

MALICIOUS

PDF

48.4 KB Authoring application: OpenOffice.org
MD5: 5a6c344dd884e575410427c2a8da104d SHA-1: 86fbbb1807d37c6ca06473251cdf918601fc2e40 SHA-256: 69e2dd8170dac6598b523b8bd57f79c32a534c1b2007bcda26b4939aef2bc02e
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document contains a large number of embedded URLs, many of which are structured as numeric slugs, indicative of a link farm. The document body text and heuristic firings suggest a social engineering lure to install a browser extension or update. This pattern is commonly used to facilitate credential theft or download further malicious payloads. The ClamAV detection and ML classifier further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://lictampa.org/uploads/1/3/0/6/130621148/3921924.pdf
    • http://nonigexoxe.multimodal.pro/uploads/2020/01/28/pigop-vafivomib.pdf
    • http://menosuxesi.russtin.com/uploads/2020/01/28/27104e86d1d7e.pdf
    • http://djdbaker.com/uploads/1/3/0/5/130545633/1339597.pdf
    • http://ziworito.moldovenii.london/uploads/2020/01/28/32634d1f55.pdf
    • http://sbfbla.org/uploads/1/3/0/6/130604466/222357545aea93c.pdf
    • http://johnhenryfox.com/uploads/1/3/0/4/130476468/rifovop-kigudo-vepasamog.pdf
    • http://0406shopps01.fun/uploads/2020/01/27/407772.pdf
    • http://vekef.100kakrd.ru/uploads/2020/01/28/4061462.pdf
    • http://thomascignomd.com/uploads/1/3/0/4/130483249/45e11f732019.pdf
    • http://tomgipson.com/uploads/1/3/0/2/130291575/02999988191639.pdf
    • http://deltonahowl.com/uploads/1/3/0/3/130379673/a88d8070c8214.pdf
    • http://deventermanueletherapie.nl/uploads/1/3/0/6/130620163/7945708.pdf
    • http://knowablekingkandles.com/uploads/1/3/0/6/130604175/877180.pdf
    • http://woko.atikpastanesi.net/uploads/2020/01/28/gelukapurirokavomera.pdf
    • https://keminuxonol.weebly.com/uploads/1/3/0/5/130538953/dosafuxadu.pdf
    • http://vmclegalsource.com/uploads/1/3/0/5/130551386/julujo_pomigu_zegupew.pdf
    • http://soteam.org/uploads/1/3/0/6/130622032/3be27b7.pdf
    • http://zavijowex.kuhni-msc09.icu/uploads/2020/01/28/e127d.pdf
    • https://pigupukomamotax.weebly.com/uploads/1/3/0/4/130483205/fugakubidozevezuk.pdf
    • https://jusibiwaso.weebly.com/uploads/1/3/0/4/130488301/sugununif_fozexa.pdf
    • http://kaz.francegothic.ru/uploads/2020/01/29/7544291.pdf
    • https://vivawigorol.weebly.com/uploads/1/3/0/4/130489229/1847755.pdf
    • http://nurturezone.co.za/uploads/1/3/0/4/130436367/fivasef_nuwofun_wofuvofowil.pdf
    • http://stokesed508webpage.com/uploads/1/3/0/2/130289481/130289481.html#adobe+acrobat+pdf+reader+app+download
    • 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_off00001730.bin
523b2ee3e9b013cb6db6bc09fe1b0adc6a8904f845ef1301323ed264b2d45ee2
pdf-font-stream PDF embedded font (sfnt) at offset 0x1730 8692 bytes
font_01_sfnt_off0000763d.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63
pdf-font-stream PDF embedded font (sfnt) at offset 0x763D 16036 bytes