Malicious PDF — malware analysis report

Static analysis result for SHA-256 f42637c85ceb2a52…

MALICIOUS

PDF

47.0 KB Authoring application: LibreOffice
MD5: 5168502481ffd70c3e69f9699d943b44 SHA-1: ca5ab26f13116f4c6e044f4b6041fb6a904ad455 SHA-256: f42637c85ceb2a52e801cb0ef135e722bac6e4a9831010b81b20d8a9c00bb944
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged for containing a large number of external links, indicative of a link farm or SEO spam. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further suggests a phishing or malicious traffic generation intent. The embedded URLs are likely used to redirect users to malicious content or further phishing pages.

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://wivufow.expresszaimdeneg.ru/uploads/2020/01/28/129cf8.pdf
    • http://peshtolina.com/uploads/1/3/0/5/130540097/dadoritoju_reruwadig_tuledepalebi_juminesixatu.pdf
    • https://wuralijotiraw.weebly.com/uploads/1/3/0/6/130604605/fafaf-sewiziseta-rinipomaxa-jewazodebusip.pdf
    • https://benopivezoso.weebly.com/uploads/1/3/0/2/130270845/8f82bd.pdf
    • http://milledlogs.com/uploads/1/3/0/3/130379457/5122346.pdf
    • http://mossmusicnews.weebly.com/uploads/1/3/0/2/130289063/eeb107a8b8c.pdf
    • http://spb-shocker.ru/uploads/2020/01/27/maroj.pdf
    • http://theforagedfern.com/uploads/1/3/0/6/130621532/5043735.pdf
    • http://azzurrawebart.com/uploads/1/3/0/3/130379380/188696.pdf
    • http://mystreetstamp.com/uploads/1/3/0/2/130270921/satafe-zarubagugexik-vonuj-vuvigoxib.pdf
    • http://rochesterreadingtutor.com/uploads/1/3/0/3/130323750/kojagatomoxot.pdf
    • http://sikizij.mummys-gold.ru/uploads/2020/01/28/lapuropadave-zonutoxofi-welak-kesaxilamales.pdf
    • http://asiaoutdoors.com.vn/uploads/1/3/0/6/130604030/zumadibamawebop.pdf
    • http://rockthecatspa.net/uploads/1/3/0/4/130436171/761737.pdf
    • http://xuzun.keydoors.ru/uploads/2020/01/27/2a90d4.pdf
    • http://rivatracecouncil.org/uploads/1/3/0/2/130289475/waxonusibuxinexokig.pdf
    • http://rigipeketa.goods-trends.top/uploads/2020/01/29/999997.pdf
    • http://100womenwhocarensc.com/uploads/1/3/0/5/130546923/zonufawiveli-movenilafanasa-fefuver-xodowenezavix.pdf
    • http://tcsonline.net/uploads/1/3/0/5/130550970/130550970.html#numeracy+worksheets+for+kindergarten

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000177b.bin
a9545397efb350e71b701d9c01c942de7463401d86098ff2cf50f38d40d8410a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x177B 7916 bytes
font_01_sfnt_off00007094.bin
f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7094 16204 bytes

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