Malicious PDF — malware analysis report

Static analysis result for SHA-256 21e9d82c944b6455…

MALICIOUS

PDF

37.2 KB Authoring application: Scribus
MD5: 250906ca4f9b28b12ac1377528f7ebb9 SHA-1: 0ef69ddde62171be7be3b101fe3b2efb19ff56fb SHA-256: 21e9d82c944b64553f90a98a1e212e40bd7a24a5dbd6f7173c2e693badcb3cf2
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also flag this as malicious, specifically as phishing or traffic redirection. The embedded URLs likely serve to distribute further malware or engage in SEO spam. No scripts were extracted from this sample.

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://mustardseedboutiquemass.com/uploads/1/3/0/2/130273626/poxezisiduxivepi.pdf
    • http://dollcleaningproducts.com/uploads/1/3/0/7/130740533/soditimavelaguke.pdf
    • http://babydollscakes.com/uploads/1/3/0/3/130379814/pizoped.pdf
    • http://palomagrapevinetx.com/uploads/1/3/0/2/130288316/cf8f843c.pdf
    • http://thendralgardens.com/uploads/1/3/0/6/130639583/sutir.pdf
    • http://lkradio.online/uploads/1/3/0/3/130323449/0af5822e14f7.pdf
    • http://lushbeautynz.co.nz/uploads/1/3/0/4/130489006/1801270.pdf
    • http://djtlmusic.com/uploads/1/3/0/6/130640069/904622.pdf
    • http://jollyollykids.com/uploads/1/3/0/8/130874339/ketixiguxeje-wavekazigid-wagajuxilosu.pdf
    • http://jpland21.com/uploads/1/3/0/3/130379178/domokoxixim.pdf
    • http://lucystreet.design/uploads/1/3/0/5/130589252/sutokunixadasakub.pdf
    • http://psinco.com/uploads/1/3/0/5/130540063/3175897.pdf
    • http://host107.carmichaelnl.com/uploads/1/3/0/7/130739162/130739162.html#brill+dictionary+of+ancient+greek+online

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003944.bin
71bdd6aeb28289668bec959d8971fc45d7c90b718db1a2251d03f739bdf91dbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3944 8524 bytes

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