Malicious PDF — malware analysis report

Static analysis result for SHA-256 0194e72ecebb1856…

MALICIOUS

PDF

39.0 KB Authoring application: Mobipocket Creator
MD5: 523fdfe7f0f6ca9553ef5ae422f4eb55 SHA-1: 78ff02800b2cd9c996c7b0eda4c10c447b4543f8 SHA-256: 0194e72ecebb1856d6c570ed74f8ab0688c7912190477ed2c17ce419f2be39db
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified as a PDF SEO link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious content or for SEO spam. The document body's text is largely corrupted but contains references to downloading audible books, which may be a lure.

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://silvertonnaz.com/uploads/1/3/0/7/130739263/rigawawa.pdf
    • http://kateyanne.com/uploads/1/3/0/5/130551824/2641426.pdf
    • http://qtsatelier.com/uploads/1/3/0/6/130639221/7717044.pdf
    • http://74-123-76-6.mgwnet.com/uploads/1/3/0/3/130313106/wujinilemu-jugoxutozabefu-xuwakelize-kusemos.pdf
    • http://paceunit.com/uploads/1/3/0/5/130589346/e7bd07eb.pdf
    • http://mlmbigmoney.com/uploads/1/3/0/6/130605230/kotabaj_fimomutuwu_sajiwemo.pdf
    • http://watermelontees.com/uploads/1/3/0/7/130775990/viligupafa_nilepiku_xinun.pdf
    • http://moderndayman.org/uploads/1/3/0/6/130621413/6134673.pdf
    • http://geneushealthaddictiontesting.com/uploads/1/3/0/7/130738946/8856517.pdf
    • http://www.brownbearjourneyllc.com/uploads/1/3/0/9/130969510/14a1c5e8519c.pdf
    • http://datascienceeurope.com/uploads/1/3/0/4/130436037/8815803.pdf
    • http://cmcap.org/uploads/1/3/0/7/130738966/7693535.pdf
    • http://northeastmaterials.com/uploads/1/3/0/7/130738894/betipelixa.pdf
    • http://cpanel.normalskinathens.com/uploads/1/3/0/6/130605397/pisadomumujo.pdf
    • http://optimalhospicefoundation.org/uploads/1/3/0/3/130324167/mupikila.pdf
    • http://www.kapljicazivljenja.com/uploads/1/3/0/6/130639321/2b0ab5c2.pdf
    • http://www.stlbluesviews.com/uploads/1/3/0/7/130740536/8350180.pdf
    • http://autodiscover.inapeartree.co.nz/uploads/1/3/0/7/130776068/zelitopuko.pdf
    • http://theimagecenter.info/uploads/1/3/0/3/130323957/abc913bc20.pdf
    • http://dicksutphenschool.com/uploads/1/3/0/6/130620670/bowavake.pdf
    • http://penguinpants.com/uploads/1/3/0/6/130603847/cd7fc976.pdf
    • http://inhomecarehuntingtonbeach.com/uploads/1/3/0/4/130489066/fe3089a4a.pdf
    • http://briannedempsey.com/uploads/1/3/0/5/130551019/jexigegifakurud-zoxuwowogabul.pdf
    • http://purespirithealingandwellness.com/uploads/1/3/0/2/130287536/cc451acc8.pdf
    • http://dimalu.net/uploads/1/3/0/7/130775136/1da890889571cda.pdf
    • http://hostmaster.hollandmachines.nl/uploads/1/3/0/5/130588295/130588295.html#can+i+download+audible+books+to+my+kindle+paperwhite

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000329e.bin
1e44bc17c1ada0c063398d9ef02f28d85e37e6098ce98610c2f3cf645c523065		 pdf-font-stream PDF embedded font (sfnt) at offset 0x329E 8280 bytes

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