Malicious PDF — malware analysis report

Static analysis result for SHA-256 62bc37371fcc08dc…

MALICIOUS

PDF

39.1 KB Authoring application: Serif PagePlus
MD5: 0437dbe90e0f5da6711dbac8e3cf853a SHA-1: 1ba6005617c9878f04ac07b7ebb496ff93831105 SHA-256: 62bc37371fcc08dc7e46b540d77978607b42e8334885a990a67b24d5d9560915
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF documents hosted on various domains. This technique is commonly used for SEO poisoning or phishing campaigns, aiming to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://nabo.remont-msk9.icu/uploads/2020/01/27/e8a12305f9a60.pdf
    • http://birminghamchiros.com/uploads/1/3/0/5/130538937/a1e3b3a.pdf
    • http://member-neteller.mobi/uploads/2020/01/29/tozolevusiveli-zupagizazuli-nodosareputala.pdf
    • http://peterjuhl.dk/uploads/1/3/0/4/130483389/9799925.pdf
    • http://galadariassociates.com/uploads/2020/01/28/b4f036890745.pdf
    • http://lijinimax.paypal-support-limitted.com/uploads/2020/01/27/8109562.pdf
    • http://morrowworldradio.com/uploads/1/3/0/5/130588809/fododa_wowosus.pdf
    • https://jirevavop.weebly.com/uploads/1/3/0/4/130435553/modovazatuderokoji.pdf
    • https://zafipaferem.weebly.com/uploads/1/3/0/2/130289233/zibufaripebujog.pdf
    • http://dimo.gtwhitlow.com/uploads/2020/01/27/9549513.pdf
    • http://dumusufaji.proastrologiu.ru/uploads/2020/01/27/0b474c1ca15f.pdf
    • https://voduboke.weebly.com/uploads/1/3/0/2/130274338/680eb.pdf
    • http://kimer.serviicosbr.com/uploads/2020/01/27/gorutatonalo.pdf
    • http://pifavopixo.artj.name/uploads/2020/01/27/8fdfd4e.pdf
    • http://abdulmuharram06.weebly.com/uploads/1/3/0/5/130539450/ganubix.pdf
    • http://wamenita.magaz-online18.ru/uploads/2020/01/27/58f505e01382043.pdf
    • http://morrisiennafarm.net/uploads/1/3/0/3/130379461/6252536.pdf
    • http://ruziwimiso.n26-logine.com/uploads/2020/01/27/fofatanewuleni.pdf
    • http://rokikim.efl.su/uploads/2020/01/27/zotokopuraxagom_pewidivujafote_lulefupewesama_vukuronajo.pdf
    • http://mozellemosaics.com/uploads/1/3/0/4/130436402/wesamexodo-tirola-bikabaja-luparek.pdf
    • http://shawmekatz.weebly.com/uploads/1/3/0/6/130639591/605347.pdf
    • http://polvcad.weebly.com/uploads/1/3/0/5/130590168/9929540.pdf
    • https://gifixasojelu.weebly.com/uploads/1/3/0/2/130270775/4492092.pdf
    • http://vezorebop.sianie72.ru/uploads/2020/01/28/bea4f39ca9a.pdf
    • http://bfreshcreative.com/uploads/1/3/0/4/130435672/c375ca6bf4b.pdf
    • http://nursingarmpillow.com/uploads/1/3/0/6/130603715/130603715.html#gift+certificate+template+vector

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000017a1.bin
c6b613c31894e4df6828636953af2bea900ef11f496fb708dd37afd6e0f45b16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17A1 7760 bytes

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