Malicious PDF — malware analysis report

Static analysis result for SHA-256 802fab09c503221c…

MALICIOUS

PDF

29.1 KB Authoring application: LibreOffice Draw
MD5: db4261d654bbb31293e622c3bfb8682c SHA-1: 5dab2438a7e6df4f77338c57b897e5808115b1ef SHA-256: 802fab09c503221cfdb519440977fd215463b8f10ddfdcb5409d5a3e8a3b1d00
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified as a PDF_SEO_LINK_FARM heuristic. This suggests a phishing or malicious redirection attempt, likely to distribute further malware or lead users to scam pages. The ClamAV detection and ML classifier further support its malicious nature. No scripts were extracted from this sample, but the extensive link farm is indicative of a delivery mechanism.

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://k-fprojects.weebly.com/uploads/1/3/0/5/130589345/suvugipisawij.pdf
    • http://rijaga.galaxytools.ru/uploads/2020/01/28/xalawiw.pdf
    • http://naletimup.garagrus.ru/uploads/2020/01/28/rivimajojomizewaxifi.pdf
    • http://mpedotaclan.weebly.com/uploads/1/3/0/2/130271061/f81516d2f69.pdf
    • http://nakedbl0ndeee.com/uploads/1/3/0/6/130621829/lexepopijaw.pdf
    • http://tjrothconstruction.com/uploads/1/3/0/5/130539742/wanaz_mabatalel.pdf
    • http://drconsultinginc.com/uploads/1/3/0/6/130604011/xakumewasofisuv.pdf
    • http://sfchampions.com/uploads/1/3/0/2/130288439/9373368.pdf
    • http://mysustainablefashion.com/uploads/1/3/0/6/130621030/bopiwiwap.pdf
    • http://davidmarquesibanez.com/uploads/1/3/0/2/130287371/130287371.html#worcester+greenstar+24i+junior+parts+list

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011bd.bin
bc8b10d261a91c08bbc16694d56f26d0dcf5151f90c560ce56bd22589ee5ef7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BD 7460 bytes

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