Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ebef990eda6f36e…

MALICIOUS

PDF

48.3 KB Authoring application: GIMP
MD5: f2f821dd9dc40e343aa5e086837c7eed SHA-1: e92874debe25405dd5783b91993ecf401467f61b SHA-256: 1ebef990eda6f36e61aa8e0bc14bcf27e0e38a88f0e6a06929d5cca8af6459c8
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains, indicating a link farm or redirection strategy. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall, and a machine learning classifier also flagged it as malicious with high confidence. The primary attack pattern involves leveraging these links, likely to distribute phishing content or manipulate search engine results.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://www.archersoftball.org/uploads/1/3/0/7/130738973/zexobetosowo_kepewetipowo.pdf
    • http://dididothat.net/uploads/1/3/0/6/130620509/remoxagux.pdf
    • http://barbellvillains.com/uploads/1/3/0/5/130545021/4858051.pdf
    • http://blueshoreinvestmentgroup.com/uploads/1/3/0/5/130551423/nexonaregadipat-nunodamufifel-zevivop.pdf
    • http://myrole.io/uploads/1/3/0/6/130639821/47579770.pdf
    • http://msbr.ca/uploads/1/3/0/6/130620279/29b4f0f2e0c.pdf
    • http://mountainofgod.org/uploads/1/3/0/6/130621349/ef987eecf9f2.pdf
    • http://millerblade.com/uploads/1/3/0/6/130639396/nimixa.pdf
    • http://ursneakers.com/uploads/1/3/0/5/130539494/5382367.pdf
    • http://sheriffproperties.com/uploads/1/3/0/7/130776786/c4aba67235f4.pdf
    • http://dbprlawyer.com/uploads/1/3/0/7/130739268/9293981.pdf
    • http://replayacademy.net/uploads/1/3/0/5/130539340/regabisaw-jarop.pdf
    • http://hostmaster.cirugiatoracicarobotica.es/uploads/1/3/0/7/130739113/643e12f32b.pdf
    • http://www.weddingdressma.com/uploads/1/3/0/6/130622051/4495919.pdf
    • http://www.designergina.com/uploads/1/3/0/6/130620314/130620314.html#definition+of+laissez-faire+leadership+in+management

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000635e.bin
8e2386a4fa6724164d311c66526db83a3e62960da88c747908ff8639ef605d09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x635E 8512 bytes

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