Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e1bf03a5a03ff4…

MALICIOUS

PDF

37.8 KB Authoring application: Smallpdf Desktop First seen: 2020-09-24
MD5: 2831371123df87d9dba21a2efe439117 SHA-1: 9110d4cfd8616b0fd93504d9b5c77375f739970e SHA-256: 75e1bf03a5a03ff4f42a856a0253f8fb2844dde736da60a9a1d54824e1ad2a10
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly indicate maliciousness, specifically classifying it as phishing-related. While no scripts were explicitly extracted, the nature of the embedded links suggests a potential for JavaScript execution or redirection to malicious sites, aligning with common phishing or SEO spamming techniques.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://webmail.lynn-gustafson.com/uploads/1/3/0/6/130604657/dikebasoniwa.pdf In PDF document text
    • http://planalive.com/uploads/1/3/0/3/130323281/xodaweju-gelukibititad-vazimu-jolejubota.pdfIn PDF document text
    • http://www.kccannabizconexpo.org/uploads/1/3/0/8/130814286/2babf15.pdfIn PDF document text
    • http://onlychild.life/uploads/1/3/0/3/130312974/xiwumure.pdfIn PDF document text
    • http://theendurancephysio.org/uploads/1/3/0/9/130969183/nibogojusula.pdfIn PDF document text
    • http://peerlesselegance.shop/uploads/1/3/0/5/130540882/64a30.pdfIn PDF document text
    • http://www.mastantuonoforillinois.com/uploads/1/3/0/5/130551727/mirosevukigowozob.pdfIn PDF document text
    • http://www.hardingfamilytree.com/uploads/1/3/0/8/130874097/zebeb.pdfIn PDF document text
    • http://www.moneyney19.com/uploads/1/3/0/5/130588596/wuwuzugebefakuvo.pdfIn PDF document text
    • http://icleanup.net/uploads/1/3/0/7/130776452/vazobaravuwezas_kodivebagapu_pagunelew_debuwure.pdfIn PDF document text
    • http://74-123-77-253.mgwnet.com/uploads/1/3/0/8/130813967/82f1be5aa.pdfIn PDF document text
    • http://comediancajohnson.com/uploads/1/3/0/7/130739924/pokisososiwe.pdfIn PDF document text
    • http://popshopsdemo.com/uploads/1/3/0/2/130271195/nerotimojela.pdfIn PDF document text
    • http://www.diannejoyce.com/uploads/1/3/0/6/130640027/4cb4d.pdfIn PDF document text
    • http://nanomat2018.com/uploads/1/3/0/6/130621310/8251003.pdfIn PDF document text
    • http://globalidnews.com/uploads/1/3/0/6/130640181/jasepur-ramop.pdfIn PDF document text
    • http://webserver.falloweenfest.com/uploads/1/3/0/5/130551226/jamasiwuw-botonokexedudu-sonen-kedida.pdfIn PDF document text
    • http://nashvillebodyworker.com/uploads/1/3/0/7/130739385/pogamoxip.pdfIn PDF document text
    • http://thedreamslab.agency/uploads/1/3/0/3/130324227/889cb72a89b90.pdfIn PDF document text
    • http://5pointauto.com/uploads/1/3/0/4/130436399/130436399.html#adeste+fideles+spartito+organo+pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33BF 9112 bytes
SHA-256: e068aedeae9b573fa8bb5ba213298987602edf5f625245b4c42ed180b02d6a16