Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e752a3373206664…

MALICIOUS

PDF

38.3 KB Authoring application: Adobe PDF Library 9.0
MD5: 8782d6fdb76df43133ec13d87f5ef2c9 SHA-1: 4ccd415d1d9fe5a181826ad0f956a2385318a8d0 SHA-256: 5e752a3373206664054fe6f7328c680e20419943248d874a4f6663b63d2edff7
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links to external PDF files hosted on various domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. This technique is often used for SEO manipulation or to distribute malicious payloads. The ML classifier and ClamAV detection further support its malicious nature. No scripts were extracted, but the primary attack pattern involves directing users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ralyvas.store/uploads/1/3/0/5/130588710/2308873.pdf
    • http://kallenkentner.com/uploads/1/3/0/4/130435888/2047017.pdf
    • http://amdberlin.com/uploads/1/3/0/5/130588588/3b6f4d2.pdf
    • http://mscenterofsoutherncalifornia.net/uploads/1/3/0/2/130291822/23c83ed84ce8ff.pdf
    • http://ensembleeroicalondon.com/uploads/1/3/0/2/130288629/wadurozaj.pdf
    • http://www.freshncleanphilly.com/uploads/1/3/0/6/130622104/nuzaku_rixekod_sidibivudiza.pdf
    • http://investingmind.net/uploads/1/3/0/5/130551449/zabomenojimivudagi.pdf
    • http://centreformindfulness.ca/uploads/1/3/0/6/130620924/sotilisixanifi.pdf
    • http://techb.org/uploads/1/3/0/7/130775127/rowesuzilopefof.pdf
    • http://madeinvenice.net/uploads/1/3/0/7/130738994/nopivim.pdf
    • http://photosandburritos.com/uploads/1/3/0/2/130289658/xonisaxosoreko.pdf
    • http://mta-sts.sharynjackson.com/uploads/1/3/0/4/130476119/fobamibu.pdf
    • http://comeseemyjamaica.com/uploads/1/3/0/8/130873794/pujixuzesisamixoju.pdf
    • http://musebeatmedia.com/uploads/1/3/0/5/130539518/2848a2.pdf
    • http://myidealventures.com/uploads/1/3/0/5/130551126/5941822.pdf
    • http://blacksmithpdf.com/uploads/1/3/0/2/130289694/2f97a26f5.pdf
    • http://webspritz.com/uploads/1/3/0/5/130590464/9ced211b7e358a.pdf
    • http://nnoutt.com/uploads/1/3/0/3/130323268/varaxorapaxubikaxa.pdf
    • http://millikenentertainment.net/uploads/1/3/0/4/130488362/fuzujo_veziguk.pdf
    • http://ashleycharter.com/uploads/1/3/0/4/130483373/fubumew-dokadob-dejatapakenawot-wirupanaguzuku.pdf
    • http://74-123-75-206.mgwnet.com/uploads/1/3/0/7/130776850/130776850.html#sais+autolinee+da+messina+a+catania
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002aed.bin
cf2338b7895a3a873add1db7dfb411390262a2a3d24e5b3dccff59843624ea97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2AED 2704 bytes
font_01_sfnt_off000036e1.bin
7c5d3df3514febdeff85dc9605d6b464f06c6cff3d52884083e392926bf938fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x36E1 7912 bytes

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