Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e92ec282ab10ed…

MALICIOUS

PDF

37.3 KB Authoring application: GIMP
MD5: a48141d620586951fee18d890d8b3519 SHA-1: daa74318f22d118ba66efa185faaee8600e6f255 SHA-256: 02e92ec282ab10ed84b2a5dd2b592e14c065fb59a22f63940c8587d192b83cd4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a mass external PDF link farm, with numerous URLs pointing to other PDF files. This is indicative of a SEO poisoning or content distribution tactic. ClamAV also detected this file as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', further supporting a malicious classification. No scripts were extracted, and the document body was heavily obfuscated.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://noraflum.org/uploads/1/3/0/6/130639655/vezonumabukigi.pdf
    • http://mentoringthroughmovement.com/uploads/1/3/0/4/130488251/6809001.pdf
    • http://millsdigital.com/uploads/1/3/0/6/130622103/kipimogitezepaxemoto.pdf
    • http://perplexion.net/uploads/1/3/0/2/130289242/nevujemuvifiw.pdf
    • http://myqmunity.com/uploads/1/3/0/6/130620197/rawanow.pdf
    • http://oilsfortriathletes.com/uploads/1/3/0/2/130270951/goranak.pdf
    • http://samanthasunday.com/uploads/1/3/0/6/130621076/balirik.pdf
    • http://mindbodypsychology.net/uploads/1/3/0/5/130539875/2452945.pdf
    • http://dianneloftus.com/uploads/1/3/0/5/130539336/2279083.pdf
    • http://yellowgroup2.com/uploads/1/3/0/5/130551943/ff16ceb97f0.pdf
    • http://vietcryptonews.com/uploads/1/3/0/6/130603855/regezo.pdf
    • http://dur.mediaprojethaiti.org/uploads/2020/01/28/5834131.pdf
    • http://miracleinabucket.com/uploads/1/3/0/6/130604256/130604256.html#ielts+topic+wise+vocabulary

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000143b.bin
0974a3f2e83c72a35edae6b269c9696987ed01e5612fbe77916f19212fd83a16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x143B 8200 bytes

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