Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cf730cd8390ca08…

MALICIOUS

PDF

48.6 KB Authoring application: GIMP
MD5: 0cf28b9bebdc1f20e282db0cd54216b4 SHA-1: 18d938f70cc0c01c4f27102acf033290c97c6f6c SHA-256: 0cf730cd8390ca086274305f0249766348cc8b07658cc4a078950942e0328ba6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, forming a link farm, which is a common technique for phishing or distributing malware. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The document body itself contains text related to interview questions, but also includes numerous links to other PDF files, suggesting a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bethegoodhands.com/uploads/1/3/0/5/130543320/bopagotajukira.pdf
    • http://killoughvillageplan.org/uploads/1/3/0/4/130436180/kazoxapinikevoj.pdf
    • http://azvrha.org/uploads/1/3/0/6/130621283/ponevar.pdf
    • http://walevif.lafethome.ru/uploads/2020/01/27/1719630.pdf
    • http://growingingracepreschool.com/uploads/1/3/0/5/130589310/wufewalibesupux.pdf
    • http://xalimadsgn.com/uploads/1/3/0/3/130323743/343983.pdf
    • http://futuretideskona.com/uploads/1/3/0/5/130588337/3809925.pdf
    • http://zajejito.doctsarev.ru/uploads/2020/01/29/0cd40ec9.pdf
    • http://aspiretogetherforum.org/uploads/1/3/0/6/130621829/jidunusopiva-zuxevuwaxo-ruwikek.pdf
    • http://bridal-makeupartist.com/uploads/1/3/0/5/130538869/9017487.pdf
    • http://mentorconcrete.com/uploads/1/3/0/6/130603748/7916221.pdf
    • http://neoshirtco.com/uploads/1/3/0/5/130550712/jilutafasu.pdf
    • http://a-aon.com/uploads/1/3/0/3/130313624/gemiwerovujolufuri.pdf
    • http://tefeva.ionos-internet.net/uploads/2020/01/29/luzagixefinodiririzu.pdf
    • http://myneosystems.com/uploads/1/3/0/2/130270937/pijipigisozoji_tukati.pdf
    • http://sod.pillos.site/uploads/2020/01/29/nikitalevakekagez.pdf
    • http://siputumu.8i1.com/uploads/2020/01/28/8498228.pdf
    • https://fosijewurudigow.weebly.com/uploads/1/3/0/4/130491703/3c1b5b57.pdf
    • https://nekuduvukolegad.weebly.com/uploads/1/3/0/3/130323934/f543c7.pdf
    • http://yokel411.com/uploads/1/3/0/6/130621167/jozuvi.pdf
    • http://callowayumc.org/uploads/1/3/0/5/130541944/zoxofi_votifaruzu_daxutef.pdf
    • https://degaroxofofufaj.weebly.com/uploads/1/3/0/2/130272557/828690.pdf
    • http://wogal.rostelekomu.fun/uploads/2020/01/28/ridigozogogufem-gelodujeribi-mupamujibejag.pdf
    • http://portal.createweb24.com/uploads/1/3/0/5/130540645/130540645.html#basic+interview+questions+for+ece+students+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011bc.bin
5458ac5c340f3a6b31d1a295135161fad7a8af7866d8023fdd76ef58702ea055		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BC 8752 bytes

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