Malicious PDF — malware analysis report

Static analysis result for SHA-256 6354696c1cdf03bb…

MALICIOUS

PDF

27.6 KB Authoring application: Inkscape
MD5: 7379659e9bc42fac932521a0c2b498cc SHA-1: 00efeb272222627c5f3503aa1a5cb5a14556bf1f SHA-256: 6354696c1cdf03bbc3ff3bee6a80c54b443d4af263b071c6987c00e428cc745b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This technique is often used for SEO spam or to distribute malicious content, as indicated by the 'PDF_SEO_LINK_FARM' heuristic and ClamAV detection. The document body itself appears to be corrupted or contains irrelevant text, but the presence of numerous external links is the primary indicator of malicious intent. No scripts were extracted, but the overall structure suggests a phishing or content distribution attack.

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://milotheclown.com/uploads/1/3/0/7/130738719/jugivirafago.pdf
    • http://theposthospitalistcompany.org/uploads/1/3/0/8/130874272/xusijudimur.pdf
    • http://abettertravelagency.com/uploads/1/3/0/3/130313271/gubuzunidawoxigijok.pdf
    • http://josephrealdesign.com/uploads/1/3/0/3/130379060/xigojobexuwuveli.pdf
    • http://podollangpis.devsite-1.com/uploads/1/3/0/5/130589366/sedoxoxinodid.pdf
    • http://charlestonblogsociety.com/uploads/1/3/0/2/130288589/18849c61660afa2.pdf
    • http://mytrippytreatzllc.com/uploads/1/3/0/6/130605278/5594af613a.pdf
    • http://bb-lash.com/uploads/1/3/0/3/130313235/kobaxemezis_guduzux_mogudetofukibij_dumuzarozilumoj.pdf
    • http://makeamarkfoundation.org/uploads/1/3/0/2/130271073/xeligopapajexemixezi.pdf
    • http://pintanbastos.net/uploads/1/3/0/3/130379291/9314698.pdf
    • http://acreativedesigncompany.com/uploads/1/3/0/7/130739164/4ed8016b.pdf
    • http://kateyanne.com/uploads/1/3/0/4/130476215/xanitozetaredu-tevejatojupikug-funenuf.pdf
    • http://sophiavalenty.com/uploads/1/3/0/5/130540402/zogovan.pdf
    • http://xtwdn6.brdge.org/uploads/1/3/0/6/130621456/130621456.html#normal+inverse+gamma+distribution+in+r

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001579.bin
a1a7121c74b396907db979cb4b93543f33c00e89ceaec4e16a936725db586af1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1579 6576 bytes

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