Malicious PDF — malware analysis report

Static analysis result for SHA-256 efb9a9f135b17735…

MALICIOUS

PDF

35.8 KB Authoring application: SWFTools
MD5: 39d0a5baed8d652713f7eb0e21d8e0e9 SHA-1: a92671d0c7e313a630cc61cd44a13e8c31ec65b6 SHA-256: efb9a9f135b177355ad6dbbf0bd30b8fd8430991bc2814233a36c3ff34a539a4
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to other PDF files hosted on various domains, suggesting a coordinated effort to manipulate search engine results or distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing or SEO-based distribution scheme.

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://westwindcafe.com/uploads/1/3/0/6/130620813/nikutajexus.pdf
    • http://fairenergyexchange.com/uploads/1/3/0/5/130542937/806b4.pdf
    • http://www.my-cwb.com/uploads/1/3/0/6/130603779/zanupalojonisab.pdf
    • http://htwitoart.com/uploads/1/3/0/6/130604546/konogasatus.pdf
    • http://psychsnack.com/uploads/1/3/0/5/130590710/mumaxovikup.pdf
    • http://elkmountainmanagement.com/uploads/1/3/0/6/130605389/notujo-mobis-limepaji.pdf
    • http://canariasrural.net/uploads/1/3/0/3/130313370/959406.pdf
    • http://smoothjazzisrael.com/uploads/1/3/0/7/130739495/masuwel_pasawogono_ridexemunosabe_gimupidur.pdf
    • http://alchemyoftime.com/uploads/1/3/0/6/130604321/biligor_kixobirut_pelifagigumil.pdf
    • http://tylerdsmith.org/uploads/1/3/0/5/130544694/a269e6.pdf
    • http://rosepunch.com/uploads/1/3/0/7/130776351/woxupexaxikoz.pdf
    • http://thaitogether.org/uploads/1/3/0/5/130551754/515f8ffd470.pdf
    • http://mountaingalsbookkeeping.com/uploads/1/3/0/6/130620618/divovak-putelusaxaxe.pdf
    • http://sensitivoantonio.it/uploads/1/3/0/5/130589430/neligudezo.pdf
    • http://martymorgan.org/uploads/1/3/0/6/130621826/487365a4326df6.pdf
    • http://designingyourown.com/uploads/1/3/0/6/130604731/vatefa.pdf
    • http://davidsonthecorner.com/uploads/1/3/0/6/130621005/dinato-ponanufel.pdf
    • http://christiewilsonpsychotherapy.com/uploads/1/3/0/4/130483494/zaxorubagok.pdf
    • http://urg.brdge.org/uploads/1/3/0/5/130551935/130551935.html#pcr+amplification+and+gel+electrophoresis
    • http://martymorgan.org/uploads/1/3/0/6/130621826/487

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002edc.bin
c5cd2af7d21f3711b1646dcb71147d4066fd588eb08a2b5c24abf89ed919ac7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDC 7584 bytes

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