Malicious PDF — malware analysis report

Static analysis result for SHA-256 95537b6b2be57cc1…

MALICIOUS

PDF

36.1 KB Authoring application: LibreOffice Draw
MD5: a2b21d6bea389a2c4c472a6541248105 SHA-1: c0a31c7cbb45f0ea4ac7dd7bcb2daa2d5d0fba90 SHA-256: 95537b6b2be57cc169ff34f127dc593ddd2ba189e5ad09f3c5d331f6b758bb07
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF documents, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are the primary IOCs, suggesting a phishing or content distribution campaign.

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://e3financial.org/uploads/1/3/0/4/130490006/goroworapakuvitaf.pdf
    • http://mpgamestudios.net/uploads/1/3/0/5/130551729/xududekusod_juvokadopa_tutasasava_niwusaritazov.pdf
    • http://roofingcalgary.org/uploads/1/3/0/7/130775109/jaretif_minuw.pdf
    • http://doctorfieser.com/uploads/1/3/0/8/130874042/422800.pdf
    • http://boonccb.com/uploads/1/3/0/7/130776714/zitegiverux.pdf
    • http://www.cocoonbyrandikristoffersen.com/uploads/1/3/0/4/130435514/3713672.pdf
    • http://www.russfootball.com/uploads/1/3/0/8/130814448/6968243.pdf
    • http://sellmyhempbiomass.com/uploads/1/3/0/6/130604244/ramafapufiwunu.pdf
    • http://hostmaster.shazar.info/uploads/1/3/0/5/130588554/fujivefafol_koruzovuma.pdf
    • http://college4u2018.org/uploads/1/3/0/7/130775840/sugexuropas_lamexam_zidamebu_deferomanov.pdf
    • http://nicksarno.com/uploads/1/3/0/4/130476672/fefunevesuwipa.pdf
    • http://tapisvarouge.com/uploads/1/3/0/6/130620871/vanipinurasepozoza.pdf
    • http://nikaspaus.com/uploads/1/3/0/2/130288514/60c019.pdf
    • http://myrole.io/uploads/1/3/0/6/130621963/8719651.pdf
    • http://thegeeksdomain.com/uploads/1/3/0/2/130291572/malowiwelelufowabes.pdf
    • http://shopmindfulminerals.com/uploads/1/3/0/4/130476974/976ee616.pdf
    • http://artistinlivingcolor.com/uploads/1/3/0/6/130620522/tekefonidutuzomet.pdf
    • http://lune-blanc.com/uploads/1/3/0/7/130739454/sokunamujuj.pdf
    • http://bailefangyulechengkaihudizhi.br3h.com/uploads/1/3/0/8/130813054/130813054.html#acute+heart+failure+symptoms+medscape
    • http://myrole.io/uploads/1/3/0/6/13062

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fc2.bin
edf232d35762c8cee13fb2451df0c36ce19afcc8638e71e2da752a027fe6a28c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC2 7764 bytes

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