Malicious PDF — malware analysis report

Static analysis result for SHA-256 60b093d4bd55802c…

MALICIOUS

PDF

34.5 KB Authoring application: Smallpdf Desktop
MD5: a1336e836dd867d34df1f27b1daf38c8 SHA-1: 2c42b863a9663a2e2ff0292ce217e262b001f1c8 SHA-256: 60b093d4bd55802caaffdaf105238193b5479aa0a9cc0238d805b21c85caabd0
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 malware. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', indicating a phishing or traffic-generating purpose. While no scripts were explicitly extracted, the structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful content.

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 https://bakonudugudow.weebly.com/uploads/1/3/0/2/130288307/2186412.pdf
    • http://bluesteelradio.com/uploads/1/3/0/2/130292125/4881287.pdf
    • http://mellissasanchez.com/uploads/1/3/0/2/130270918/timetam.pdf
    • https://famojurogosof.weebly.com/uploads/1/3/0/2/130272327/23ca93f4f.pdf
    • https://murokiza.weebly.com/uploads/1/3/0/6/130604102/5d3c6560f68f.pdf
    • http://oneactioncalendar.org/uploads/1/3/0/5/130545278/bbfa2acd6b1.pdf
    • https://jopuvuneneruw.weebly.com/uploads/1/3/0/5/130547275/ad6ec.pdf
    • https://nijisedaj.weebly.com/uploads/1/3/0/2/130289461/8450994.pdf
    • https://zinitowamatip.weebly.com/uploads/1/3/0/5/130539738/1155bb9078.pdf
    • http://wup.shop-siberia.ru/uploads/2020/01/27/kewexitanin_lifagiralul.pdf
    • http://motorcyclestereo.net/uploads/1/3/0/4/130476786/bdb01b3b24fbdf.pdf
    • http://stgeorgestucco.com/uploads/1/3/0/4/130479082/fikedatuxew.pdf
    • http://benjamindrees.weebly.com/uploads/1/3/0/6/130620662/seguxawonexumigedo.pdf
    • http://shardexplorers.com/uploads/1/3/0/6/130620417/130620417.html#wreckfest+season+pass+ps4+won%27+t

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000136f.bin
ea3f9a8977835590fc23e4d6664ec3b942dc6def2ad9b181dd976e79e1d3fad0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x136F 8356 bytes

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