Malicious PDF — malware analysis report

Static analysis result for SHA-256 91ada248f735a208…

MALICIOUS

PDF

37.2 KB Authoring application: OpenOffice.org
MD5: e9ad1685d12cf914758e4ca88020b909 SHA-1: 543285b6acd2a4308ebc25f2ad5fa7de5a9da2bf SHA-256: 91ada248f735a2089fc3c73443ad46f8b406a9bdb4fae31b15e6f5c86ba91f43
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also indicate maliciousness, specifically flagging it as phishing or a traffic redirection tool. The embedded links likely lead to malicious content or phishing sites, aiming to trick users into downloading further malware or divulging sensitive information.

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://anxietyrecoverycambridgeshire.com/uploads/1/3/0/4/130475939/dufeporezo-xoniwavumedawu-refetem.pdf
    • http://nudazo.osbert11.com/uploads/2020/01/27/d0c6273752fe.pdf
    • https://kiroboxajogut.weebly.com/uploads/1/3/0/3/130313539/8652896.pdf
    • http://aeroagt.com/uploads/1/3/0/4/130488220/tamosekokila-wagelodemu-zowosawebof.pdf
    • http://m.kaltydesigns.com/uploads/1/3/0/6/130639635/8717290.pdf
    • http://biosa-az.com/uploads/1/3/0/6/130604806/zuzewozonelizeg_xadozebakinamu_bebigot.pdf
    • http://xoruguga.mammoth24.com/uploads/2020/01/29/bepolu.pdf
    • http://kellenkellenkellen.com/uploads/1/3/0/3/130313319/3fbf06b61.pdf
    • http://newriverknockouts.org/uploads/1/3/0/3/130323462/mogebawojil_towagav_duvupifox_fatavubinarad.pdf
    • http://shaohuawu.com/uploads/1/3/0/4/130435649/5463813.pdf
    • http://lynalen.com/uploads/1/3/0/5/130539928/vevonutigovoburazisa.pdf
    • http://vavilire.codecollector.org/uploads/2020/01/28/2bc49ee22c852.pdf
    • http://naf.serviicosbr.com/uploads/2020/01/27/2895717.pdf
    • http://dollarsfordoorsllc.com/uploads/1/3/0/5/130589186/wadifap.pdf
    • http://voctechinternational.com/uploads/1/3/0/4/130436079/lubawixogugun.pdf
    • https://wumulisuxewo.weebly.com/uploads/1/3/0/6/130605307/bibim_woxidevifezidok.pdf
    • http://gubug.pcash.fun/uploads/2020/01/28/ridezodolodim.pdf
    • https://kubasosigo.weebly.com/uploads/1/3/0/2/130287919/rodebip-biwagonipir-fopefokag.pdf
    • http://artfromaveganheart.com/uploads/1/3/0/5/130542831/b1126a9178cedcc.pdf
    • http://amazingamericanstv.com/uploads/1/3/0/2/130291640/2023546.pdf
    • http://fjbusinesseconomics.com/uploads/1/3/0/5/130590618/zopadakew-fevurasaralo-gasudokumabun.pdf
    • http://nicolitulk.com.au/uploads/1/3/0/2/130270779/130270779.html#ergonomic+assessment+tools+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000016b4.bin
762fb1bdbc9223830310f16a93036b47f85c4dcd302638f0b9303cc9abc493da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16B4 7776 bytes

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