Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0abfe2098fadde…

MALICIOUS

PDF

38.9 KB Authoring application: Nitro PDF
MD5: bd6912f034c15185ee7afea874f68ca4 SHA-1: 1f438ba63de42ab0e2629572cf31d9c7e2b439ee SHA-256: 1d0abfe2098faddec80f8ebf132140aa3e74d76204d5b74d9ec8e4c3cac16db9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, many of which point to other PDF files. This is indicative of a link farm designed to distribute malicious content. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output further support the malicious nature of this document. The embedded URLs are likely used to redirect users to phishing or malware download sites.

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://5toolgroup.com/uploads/1/3/0/6/130604877/veviwomo.pdf
    • http://anonimofoundation.org/uploads/1/3/0/2/130272254/dovaxodarijev_zavujaravu_kalala_tebolugiwob.pdf
    • https://fekevubube.weebly.com/uploads/1/3/0/4/130436354/74825eca3.pdf
    • http://neobotanic.com/uploads/2020/01/28/2277282.pdf
    • http://summerprogramclps.weebly.com/uploads/1/3/0/4/130435726/dopebilo_kunusirasu_gafakataro_sorerabed.pdf
    • http://wazyshairsalon.com/uploads/1/3/0/6/130604626/gegojiw_bevebesotuzad_sezitu.pdf
    • https://lakibitafu.weebly.com/uploads/1/3/0/5/130550742/damise_minob_lesexunovif_jonakave.pdf
    • http://pronsv.ru/uploads/2020/01/28/sapegewapa_wuwiweleba_rexobogolonik.pdf
    • http://mrsdavisswghs.com/uploads/1/3/0/5/130551405/9915314.pdf
    • http://mndball.com/uploads/1/3/0/6/130621801/18a9de26.pdf
    • http://bklynfete.com/uploads/1/3/0/4/130488220/dowiwififiretoza.pdf
    • https://guvuninawimo.weebly.com/uploads/1/3/0/5/130589401/3916354.pdf
    • http://kristinacsanaky.com/uploads/1/3/0/2/130289756/rosinasunizizej_tinemurexovejis_zetejiv.pdf
    • http://airportinterface.com/uploads/1/3/0/2/130271224/9521327.pdf
    • http://nakff.net/uploads/2020/01/28/pigugapiritilaj-pusoregotaf-tomowodufivasa-zamobigelakixo.pdf
    • http://skadooshdance.com/uploads/1/3/0/6/130639956/130639956.html#anger+of+stick+5+mod+apk+apkhome

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000150f.bin
02efaca5e6ebb79beefee2ccfd02c05b439bd93b3a7543a05753605cc0f3772e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x150F 8448 bytes

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