Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df6ea96943de67f…

MALICIOUS

PDF

35.7 KB Authoring application: PDFedit
MD5: 9f47f64430b2e1e7f61c776f53bb5a72 SHA-1: d5e2ab87ba49f9704ca85daf4a0ebaf84c2ab301 SHA-256: 4df6ea96943de67faa07bed0a1fbae5b8f2a5e52aad3e0eb3a31d8d92d42e0b3
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical alert for a PDF link farm containing numerous external URLs. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The embedded URLs likely serve as lures to phishing sites or to download further malicious content. No scripts were extracted from this sample.

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://russimavia.ru/uploads/2020/01/27/9006972.pdf
    • http://wovolap.galamosaic.net/uploads/2020/01/27/1918469.pdf
    • https://manumekowexo.weebly.com/uploads/1/3/0/5/130590558/8555128.pdf
    • http://thereedmachine.com/uploads/1/3/0/2/130288334/tatuj-wipozawa-xagiseban.pdf
    • http://micahandersonmfti.com/uploads/1/3/0/5/130551991/wokutokujej.pdf
    • http://nix-dns-oldi.info/uploads/2020/01/28/dekofabajofibebapip.pdf
    • http://xafu.speacetech.us/uploads/2020/01/27/4d446a88626d0da.pdf
    • http://weallloverice.com/uploads/1/3/0/2/130272086/5070369.pdf
    • http://jamegola.mbsmun.site/uploads/2020/01/28/c3e25795.pdf
    • https://vufomowukabatij.weebly.com/uploads/1/3/0/4/130488512/zisozuzegikikanodat.pdf
    • http://nim.free-log-tracke.com/uploads/2020/01/29/sezebowijes-kapaxu-sisobapoxuj.pdf
    • https://lewodakawar.weebly.com/uploads/1/3/0/2/130272432/kolerit.pdf
    • http://cwegcommunity.org/uploads/1/3/0/2/130272452/130272452.html#b%C3%B6lme+b%C3%B6l%C3%BCnebilme+%C3%A7%C4%B1km%C4%B1%C5%9F+sorular

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000156b.bin
6e9097b69127d6c923221fe0f659c79143559039ce07eb7030f6b303917b1ada		 pdf-font-stream PDF embedded font (sfnt) at offset 0x156B 9304 bytes

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