Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d329bac48f5d045…

MALICIOUS

PDF

39.3 KB Authoring application: Nitro PDF
MD5: ed2ed18c230df170f12f1e33803f9894 SHA-1: 6376cf1bab00cd7305455601cdf0a740735087a8 SHA-256: 6d329bac48f5d04528285af907557ccd6546b88f3840d28f7048754f5506073c
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external links, identified as a link farm, suggesting a tactic to manipulate search engine results or redirect users to potentially malicious content. ClamAV and ML classifiers also flagged this file as malicious, specifically as phishing or a trojan downloader. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://mupe.buket99.com/uploads/2020/01/29/9584599.pdf
    • https://nazavelo.weebly.com/uploads/1/3/0/4/130483848/fosefawami.pdf
    • http://pikokuwe.sumeza.ru/uploads/2020/01/28/dolozimuwofowim.pdf
    • http://becomingjustice.com/uploads/1/3/0/6/130604077/8009537.pdf
    • http://my-kimba-kreations.com/uploads/1/3/0/5/130539414/wepiverexopumugusiki.pdf
    • https://rajejaxusumesi.weebly.com/uploads/1/3/0/5/130588894/lusejar.pdf
    • http://vickyloid.weebly.com/uploads/1/3/0/4/130476744/refexinul_judisavodatak_duzupunako.pdf
    • http://nvhomebuyer.com/uploads/1/3/0/5/130551625/momab_dutimikukupir_nukurejeg_nitaxep.pdf
    • http://tibabale.0406shopps03.fun/uploads/2020/01/27/259177ecfb.pdf
    • https://pokotesumer.weebly.com/uploads/1/3/0/5/130588957/fumewerujeje.pdf
    • http://pelux.colorfulinkstudio.com/uploads/2020/01/28/pekikapi_ketutuseguxe_divivetafekew.pdf
    • http://mrrodthompson.weebly.com/uploads/1/3/0/3/130313289/901a275ac0e.pdf
    • http://sogaka.serdyukov.pro/uploads/2020/01/28/gedumed_zipujifaritez.pdf
    • https://pelirevuj.weebly.com/uploads/1/3/0/5/130588517/4820173.pdf
    • http://laihlasmum.com/uploads/1/3/0/3/130379231/2450312.pdf
    • http://blythetierneydever.com/uploads/1/3/0/2/130289765/8326707.pdf
    • http://pameladirnberger.com/uploads/1/3/0/6/130640052/130640052.html#auguste+comte+and+positivism+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001486.bin
9e10b983992c72cc339b04cd8d3cdbc421d5ddf62feb4152e0e90d388fcd50db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1486 7480 bytes

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