Malicious PDF — malware analysis report

Static analysis result for SHA-256 561d3637e4e4a2eb…

MALICIOUS

PDF

35.8 KB Authoring application: LibreOffice Draw
MD5: 09b978eadc909453b74177ce6c7b2219 SHA-1: e5aee0b8e5a9f38d858b41b03941df417ac560cb SHA-256: 561d3637e4e4a2eb48f81cfe6156ccbc3e7af7b0674f3dd80212551a283dbc54
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. 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 harmful content. 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://remont-info.com/uploads/2020/01/28/2782179.pdf
    • http://taxuw.etalonclinica.ru/uploads/2020/01/28/fakumiled_lotugukukuveze_wubufov_xekomubew.pdf
    • http://xulewow.ugra-transfer.com/uploads/2020/01/27/dipaxofipawom_fekinaxoz_kokit_fajofeguw.pdf
    • https://digodajip.weebly.com/uploads/1/3/0/5/130550769/6454944.pdf
    • http://wilizen.tamadanataly.ru/uploads/2020/01/28/mufitamupe.pdf
    • https://botinepaja.weebly.com/uploads/1/3/0/2/130287441/6045c0696b7ee9.pdf
    • http://zagado.festivalweer.com/uploads/2020/01/28/4911172.pdf
    • http://pep.dturen.com/uploads/2020/01/28/fawakisodo-vivirivusofi-toril-jefiruvetowuri.pdf
    • http://nalegke.pro/uploads/2020/01/28/6cb1dab90a5f.pdf
    • https://nunegegitoka.weebly.com/uploads/1/3/0/2/130291996/kexorakixumu.pdf
    • https://bujagiwal.weebly.com/uploads/1/3/0/2/130289363/bekatipi.pdf
    • http://sunajoku.sushi-v-noginske.ru/uploads/2020/01/27/86dc2.pdf
    • http://tesug.autoobzors.ru/uploads/2020/01/28/6199721.pdf
    • http://rivumudolo.healthrating.ru/uploads/2020/01/27/bipozi.pdf
    • http://xufaludat.pharmaexpo.tech/uploads/2020/01/28/serenedolutit.pdf
    • http://viw.master-grumer.ru/uploads/2020/01/27/6340997.pdf
    • https://najajigegageno.weebly.com/uploads/1/3/0/2/130270903/7474883.pdf
    • http://doxamete.volkovaelena.ru/uploads/2020/01/27/vezuxur-polelakewulurib-teragolo-gixeturas.pdf
    • http://medu.volyer-oleni.ru/uploads/2020/01/27/dawete_rapotakugagale_xudapubu_womegomegu.pdf
    • http://bivofu.boltkomplekt.ru/uploads/2020/01/28/salixidesogikugaku.pdf
    • https://xeniparam.weebly.com/uploads/1/3/0/4/130483794/130483794.html#clauses+of+concession+exercises+multiple+choice

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015df.bin
121c8206922cc4fcb3b6de41bb8de247e78a70c09c9a3456dad1dea77c7cfb3c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15DF 7784 bytes

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