Malicious PDF — malware analysis report

Static analysis result for SHA-256 52bfd2e9319a54e6…

MALICIOUS

PDF

49.9 KB Authoring application: QPDF
MD5: 1c9285aa94377c8b31d7665fbc35ba10 SHA-1: 2cfed0e2898242edf226f2c8662e4ef4a1c68304 SHA-256: 52bfd2e9319a54e6ddb187c1c3b717f364581fe32cabe621986d807fdf765fb1
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, indicative of a link farm. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. The document body, though heavily obfuscated, contains references to GTA 5 cheats and includes several of the embedded URLs, reinforcing the lure aspect.

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://aislingfrippery.com/uploads/1/3/0/5/130589108/04b98e5e0823.pdf
    • http://opalwolf.com/uploads/1/3/0/7/130739968/gemijukuretuzif-sabem-towabeni-josetix.pdf
    • http://abetterwaytobreathe.com/uploads/1/3/0/4/130436242/5672774.pdf
    • http://saintagony.com/uploads/1/3/0/8/130873829/marigep_xikudilezav.pdf
    • http://bensresume.com/uploads/1/3/0/8/130813550/cd288e8c60.pdf
    • http://www.alissacastaneda.org/uploads/1/3/0/6/130603807/1406921.pdf
    • http://4lawsfamily.com/uploads/1/3/0/4/130435938/106a72e.pdf
    • http://williamswonderwomen.com/uploads/1/3/0/9/130969129/4191facb4930.pdf
    • http://receptor.host/uploads/1/3/0/6/130620613/mawokos.pdf
    • http://alohawraps.co/uploads/1/3/0/7/130776104/9769805.pdf
    • http://invisionstudioresources.com/uploads/1/3/0/7/130775164/04ed1c3ccf521.pdf
    • http://urgenthousecalls.com/uploads/1/3/0/6/130621206/tebasubi.pdf
    • http://www.thingstodopuertoplata.com/uploads/1/3/0/8/130814729/foferoxesixa.pdf
    • http://pingjiazuihaodeqipaiyouxi.br3h.com/uploads/1/3/0/6/130603728/130603728.html#cheat+codes+for+gta+5+xbox+one+guns

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fda.bin
34901c2df4bf912716b92e7b5236e3defc3ac464cc0fc7ea240fbec2e795d781		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA 8852 bytes

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