Malicious PDF — malware analysis report

Static analysis result for SHA-256 359fac371621abee…

MALICIOUS

PDF

31.3 KB Authoring application: Smallpdf Desktop
MD5: 81ad093adca580f8292e6aa9fcce44a2 SHA-1: 5f6c86c19692ddf0b842218a86f7db7a0f290028 SHA-256: 359fac371621abee85d77df56674b782f7cc5aaac08b337ae2830cd284e79c1d
120 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, a technique commonly used for SEO poisoning and phishing. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing intent. The document body, while containing educational material, also embeds URLs that likely lead to malicious content, aiming to redirect the user to a compromised site.

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://hohohohustle.com/uploads/1/3/0/5/130588425/fipatelux.pdf
    • https://verisozi.weebly.com/uploads/1/3/0/4/130489222/fenokidokutomotu.pdf
    • http://nivafoundation.com/uploads/1/3/0/2/130270887/samuwobut.pdf
    • http://kacihollingsworth.com/uploads/1/3/0/4/130489564/puvomusirekigem-fimuve-bebujivit-vinazolimatudik.pdf
    • http://thepowergroupnc.com/uploads/1/3/0/2/130272850/be8264d.pdf
    • http://nonstopinterior.com/uploads/1/3/0/5/130589045/zuxowamuw_zipew.pdf
    • http://bellinghamweekly.org/uploads/1/3/0/6/130621741/tutamogivaro_garoketuv_nametavam.pdf
    • http://declanvoss.com/uploads/1/3/0/5/130588841/8d7cca6da5ec4df.pdf
    • http://macdesignthinking.com/uploads/1/3/0/4/130479044/tesotisepipitevisan.pdf
    • http://policetrailer.com/uploads/1/3/0/3/130323738/130323738.html#adjective+phrases+worksheets+with+answer+key

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001205.bin
18f3058d97488776206f467b9f82e94bd3889aadc9addd534a5e44f2ad76645a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1205 7108 bytes

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