Malicious PDF — malware analysis report

Static analysis result for SHA-256 172105641c50dd81…

MALICIOUS

PDF

39.6 KB Authoring application: OpenOffice.org
MD5: c96afdf5fd4fe1ad4cbd9f05b99bdc39 SHA-1: fbe090475ce77d1f1a37d66bc34997f93e07f346 SHA-256: 172105641c50dd81ee8c3a219e0c6e85a242194c8d2b31a6a4084285780515ec
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including a critical alert for a link farm containing numerous external PDF URLs. The ML classifier also strongly indicated maliciousness. The embedded URLs suggest a phishing or redirection scheme, likely aiming to lead users to malicious content or further compromise.

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://citruslist.com/uploads/1/3/0/6/130604863/wolin-fesegan-gedufoboboxo-ravutawis.pdf
    • http://elisemichalart.com/uploads/1/3/0/7/130740210/668856.pdf
    • http://hiung.net/uploads/1/3/0/8/130813115/6548130.pdf
    • http://hostmaster.atikamianti.com/uploads/1/3/0/4/130476598/dff7f02f43.pdf
    • http://heathervandeest.com/uploads/1/3/0/8/130873810/2f262fe0fa.pdf
    • http://brewwber.com/uploads/1/3/0/8/130873710/zemomufebod.pdf
    • http://saint-tims.com/uploads/1/3/0/2/130270748/wukom-sowabel.pdf
    • http://alternativerecoverysolutions.com/uploads/1/3/0/2/130271245/81300f8.pdf
    • http://meritcardmoapp.com/uploads/1/3/0/2/130291676/lesemidemaz.pdf
    • http://bodydelux.com/uploads/1/3/0/2/130270913/4171490.pdf
    • http://stunningmonitor.genbasolutions.com/uploads/1/3/0/7/130739557/3ba711874355.pdf
    • http://bargins.store/uploads/1/3/0/5/130589317/sasorosubu.pdf
    • http://residenciales.org/uploads/1/3/0/7/130775342/sivesovamawusu-xevapixupolapi-jipilapatasen-revalosokamanan.pdf
    • http://protaldiet.com/uploads/1/3/0/2/130289645/727cd085.pdf
    • http://snomeo.com/uploads/1/3/0/4/130490115/bexufitenavo-wesobupa-nomuwanuna.pdf
    • http://gutbustinggames.com/uploads/1/3/0/5/130551607/067bd55342f44c7.pdf
    • http://vps14-internal.pleasingfood.com/uploads/1/3/0/4/130483582/130483582.html#myocardial+infarction+ecg+interpretation+quiz

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003dd1.bin
ba6d1c89d81cf491aba9d352e8553639ccea8cf349756db7ad0854ceab6cb5a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3DD1 8536 bytes

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