Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dd849d8e8c9e610…

MALICIOUS

PDF

38.5 KB Authoring application: pstoedit
MD5: ad10265ad083d0524a1d7d9ce4ede5a8 SHA-1: c76c8feaf788243403c27749d8804f56a64ba89b SHA-256: 8dd849d8e8c9e61007605f64a5b5b7a1a8af687623ec22af25e919f1561d068c
150 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical finding for a 'PDF_SEO_LINK_FARM' which indicates a large number of external links. The ML classifier also assigned a high probability of maliciousness. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The embedded URLs are likely part of a campaign to distribute malicious content or phish for credentials.

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://www.suncoaststringquartet.com/uploads/1/3/0/4/130435956/wepugogasoval.pdf
    • http://roatansundowners.com/uploads/1/3/0/5/130588187/guduvojikote_mapegimeba_woxuluda_pivofuwolu.pdf
    • http://mta-sts.oneworldcircus.com/uploads/1/3/0/6/130639755/musijodefujedab.pdf
    • http://taobaomiaoshaqizidongdati.thesurge.cc/uploads/1/3/0/7/130775986/2309914.pdf
    • http://www.flythecoopfarmsitting.com/uploads/1/3/0/7/130775027/420550.pdf
    • http://abwmaine.org/uploads/1/3/0/4/130476821/mukag.pdf
    • http://coopermanselfdefense.com/uploads/1/3/0/4/130491063/18ac95b.pdf
    • http://skynet.institute/uploads/1/3/0/6/130620384/2589653.pdf
    • http://magnabait.net/uploads/1/3/0/6/130621052/lalix.pdf
    • http://tobiasfate.com/uploads/1/3/0/4/130436513/nozifonudadoke.pdf
    • http://www.schoolofthatchingireland.eu/uploads/1/3/0/6/130604125/toroz.pdf
    • http://pioneerriskmgmt.net/uploads/1/3/0/4/130483402/gimokupezagutib-gopusubidi.pdf
    • http://myamazonsupport.net/uploads/1/3/0/6/130640084/1850e872b8.pdf
    • http://www.plexusbetterliving.com/uploads/1/3/0/5/130588857/90133be60967.pdf
    • http://sta-66-99-58-216.ladse.org/uploads/1/3/0/4/130479312/130479312.html#adenose+esclerosante+%C3%A9
    • http://www.schoolofthatchingireland.eu/uploads/1/3/0

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003a63.bin
bf4de3fd4956a77fd82cc07f6239e4999fb1751b88fb31b7a6760db899fc301c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A63 8932 bytes

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