Malicious PDF — malware analysis report

Static analysis result for SHA-256 1adcd3dfc16903de…

MALICIOUS

PDF

38.3 KB Authoring application: Karbon
MD5: ece457763114a39834e2108cda89adf2 SHA-1: 57c72cbe5580df9d0af5403305f288d68e4f49df SHA-256: 1adcd3dfc16903de21310e955f9be9b44966bca94fe80f4a62c98627738d215a
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though partially corrupted, mentions 'WACC Formula' and includes many of the extracted URLs, suggesting a lure to external content.

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://edclarkesound.com/uploads/1/3/0/6/130639811/b9d80e6cb4a582.pdf
    • http://mybarrieroflavish.com/uploads/1/3/0/2/130272094/pomadowosivu.pdf
    • http://jakifaza.comparatuapuesta.com/uploads/2020/01/28/fuzikavedok-wiribanalikaler-jifazenel-gozugololeno.pdf
    • http://cannablissfest.com/uploads/1/3/0/6/130639444/nogikedukos_jorelipiti_lewakotaj_bifetixapifabi.pdf
    • http://ncbg.weebly.com/uploads/1/3/0/5/130542866/b00763be64.pdf
    • http://nuobeijinghotel-chinese.devsite-1.com/uploads/1/3/0/2/130288684/7408925.pdf
    • http://sexandsexualhealth.com/uploads/1/3/0/5/130588847/d6cb7c04555b6d.pdf
    • https://mofusujutoda.weebly.com/uploads/1/3/0/6/130604505/zaravopamo.pdf
    • http://translantau.transasiaseries.com/uploads/1/3/0/3/130323412/6098b99d82.pdf
    • http://newborntaxidermy.com/uploads/1/3/0/6/130604810/8ea794eee5.pdf
    • https://rafuzonote.weebly.com/uploads/1/3/0/2/130273893/5e335c8.pdf
    • http://voraginedeescritores.com/uploads/1/3/0/6/130639661/9d1ac3f52e2.pdf
    • https://golaxagadi.weebly.com/uploads/1/3/0/2/130272291/rabawizapoxoxanote.pdf
    • http://very-id.info/uploads/1/3/0/3/130312957/3b67909b.pdf
    • http://stokesed508webpage.com/uploads/1/3/0/6/130604222/130604222.html#wacc+formula+espa%C3%B1ol

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014bb.bin
9af8d5fedbcb50f36972355387405a8de2f152da30fbb3d0377995c1f733172a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14BB 9828 bytes

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