Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc15321cd3aaa0da…

MALICIOUS

PDF

36.9 KB Authoring application: Serif PagePlus
MD5: 104f9f59df00c0e613a650ac569d53cb SHA-1: 8fe8cbb1ea6c25f6b6584b39a17d652d68e24d06 SHA-256: cc15321cd3aaa0daeb35f9666d248a096836bedd7e8b866953760128017876fb
150 Risk Score

Malware Insights

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

The PDF contains a link farm of external PDF files, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, references 'Alcoholic hepatitis differential diagnosis' and includes URLs that are likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://johnrasberry.com/uploads/1/3/0/6/130604077/bozigixudinumuza.pdf
    • http://www.illinoiselksjuniorgolf.com/uploads/1/3/0/6/130605036/vutenonu.pdf
    • http://templespringsplaystudio.com/uploads/1/3/0/7/130776264/gimurusuxuv.pdf
    • http://nantcaw.co.uk/uploads/1/3/0/7/130776166/zavatumukexox_siwotixud_lenazidovu_kuxomijurujalo.pdf
    • http://navamtech.com/uploads/1/3/0/2/130289311/tofajuxaf.pdf
    • http://nickidenicki.com/uploads/1/3/0/7/130739120/pegesifiwevada-wulapub-nalifukogijo.pdf
    • http://www.drgreigltd.co.uk/uploads/1/3/0/6/130603832/161469.pdf
    • http://adelaideartifacer.com/uploads/1/3/0/2/130271047/jiwizijafikelibiledi.pdf
    • http://blackmomsstaylifted.com/uploads/1/3/0/3/130323235/eea51.pdf
    • http://iamcascade.com/uploads/1/3/0/4/130488282/tugazoganavofaf.pdf
    • http://hplministries.org/uploads/1/3/0/6/130621351/130621351.html#alcoholic+hepatitis+differential+diagnosis

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003b7b.bin
3164b09f706cb274225ff55f8b5b3718fa676f2fc8d0de913772a94a1eb58b31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3B7B 7504 bytes

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