Malicious PDF — malware analysis report

Static analysis result for SHA-256 975f929bfd150fc2…

MALICIOUS

PDF

31.6 KB Authoring application: pdf-parser
MD5: f2aea0f343d17d6c965bb023972381dd SHA-1: 7448894b75939f992475f65b4e50d21e410b8e5c SHA-256: 975f929bfd150fc267ad489c73cd1c89739611da3c9e325510c97d819474708a
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical finding for a large number of external PDF links, suggesting a link farm or redirection tactic. ClamAV also identified it as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The embedded URLs, such as http://tutotad.livenstudy.com/uploads/2020/01/28/juzitevekor.pdf, are likely used to distribute malicious content or phish for information. 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://tutotad.livenstudy.com/uploads/2020/01/28/juzitevekor.pdf
    • http://nikoge.salecheb.ru/uploads/2020/01/29/turojapupubi.pdf
    • http://kevinmaier.com/uploads/1/3/0/6/130604040/vorimu_neligamimubomij_gisonizemebud.pdf
    • http://romus.igirls.fun/uploads/2020/01/28/jezesadoxegizapi.pdf
    • http://dianapop.es/uploads/1/3/0/6/130620345/gadakafe_nilidefedobakub_mewugakeb.pdf
    • https://turufevi.weebly.com/uploads/1/3/0/3/130380084/3be7ceaffd7.pdf
    • http://aarstudiomasters.com/uploads/1/3/0/6/130621545/7264083.pdf
    • http://los.retinuelk.org/uploads/2020/01/27/2955121.pdf
    • https://gesinuvatux.weebly.com/uploads/1/3/0/5/130544694/vigalasinawirizu.pdf
    • http://mariettasquarefarmersmarket.net/uploads/1/3/0/5/130546096/tivapirop.pdf
    • http://rhsgirlsbasketball.com/uploads/1/3/0/3/130323507/fedubif.pdf
    • https://mogotefi.weebly.com/uploads/1/3/0/5/130540208/vepamufowipuwozajid.pdf
    • http://margotmargaux.com/uploads/1/3/0/6/130605380/130605380.html#zack+knight+bollywood+medley+6+lyric
    • http://margotmargaux.com/uploads/1/3/0/6/13060

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001302.bin
00467bf052f26fd0f76a4ffc7c7f347f6e0c750136c2097b691db0f286f6fd61		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1302 7568 bytes

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