Malicious PDF — malware analysis report

Static analysis result for SHA-256 72d82825995bc3e0…

MALICIOUS

PDF

32.5 KB Authoring application: Adobe PDF Library 9.0
MD5: 24fe1eeb1cf0addacf9de6e25f703942 SHA-1: fc86b7eee291e9b5438d44e46b3df7b637bcd25a SHA-256: 72d82825995bc3e05e825da84b4c50b1f408e187cbecc4db340cc9c05131989b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as 'Pdf.Phishing.TtraffRobotInstall'. No scripts were extracted, but the document body contains obfuscated text and URLs, suggesting a phishing or redirection attempt.

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://agorami.com/uploads/1/3/0/7/130739069/2255822.pdf
    • http://achintconsultinginc.com/uploads/1/3/0/6/130604324/nomovobolusu_mejen_xilamagulokasi.pdf
    • http://hairbyjonathan.com/uploads/1/3/0/6/130605112/dixeposuro-begojifegi-xerukajuzapima-rukuwiwunapo.pdf
    • http://12250parkway.com/uploads/1/3/0/2/130271240/zewos.pdf
    • http://nicholslawpdx.com/uploads/1/3/0/5/130551364/bezimewez-koguxizemag-tijimagikulut.pdf
    • http://theodoreskye.com/uploads/1/3/0/6/130640105/6a237.pdf
    • http://steeltec.us/uploads/1/3/0/7/130739653/bivetadez.pdf
    • http://gutclubsemi.com/uploads/1/3/0/5/130539231/f0459a115.pdf
    • http://vom-marcus-canis.com/uploads/1/3/0/5/130538922/04a1888632c8.pdf
    • http://kylebragger.net/uploads/1/3/0/3/130313088/tabelujebef_pujan_gajavefukufim_sesowaxabagak.pdf
    • http://www.jksbooks.com/uploads/1/3/0/6/130621865/nubanuvaluzevevide.pdf
    • http://sincerelycam.com/uploads/1/3/0/7/130740461/bovowag.pdf
    • http://boonccb.com/uploads/1/3/0/7/130740212/vegaxuputu_sovoru_vibufilili_xosudupasuramof.pdf
    • http://dreammakersta.com/uploads/1/3/0/6/130621501/pugutonugedosuf-zunovowafawawo-pomit-jedexepetizemod.pdf
    • http://chil-lax.net/uploads/1/3/0/4/130483443/a2a553c01222.pdf
    • http://wearmonster.com/uploads/1/3/0/5/130539992/99da9041.pdf
    • http://brainstormembroidery.com/uploads/1/3/0/5/130588902/42bbc02737f6.pdf
    • http://www.giuliosterbinisounddesign.com/uploads/1/3/0/9/130969235/zigozasafa.pdf
    • http://budgetboutiquebeds.com/uploads/1/3/0/7/130776268/lunurusiwupijol_sumase.pdf
    • http://ugjw.brdge.org/uploads/1/3/0/5/130589252/4260493.pdf
    • http://monsterformconstruction.com/uploads/1/3/0/2/130289291/51f4d28425e9.pdf
    • http://host150.carmichaelnl.com/uploads/1/3/0/6/130639569/130639569.html#pearson+functional+skills+maths+level+1

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000020a1.bin
d8ffdae29a9bf25b106639fdb9e6695cb8b57853d32d4a449d2aca72c7c78584		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20A1 6872 bytes

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