Malicious PDF — malware analysis report

Static analysis result for SHA-256 4774b2d76e7b4141…

MALICIOUS

PDF

40.6 KB Authoring application: LibreOffice Draw
MD5: caea67631f8357302c8295c520e76128 SHA-1: 3a0ea73773321d9798f7b7976b494e88a600ee0d SHA-256: 4774b2d76e7b41418d0a0781b096354b391fdcebe0de4dda4369675b823a9099
150 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier. The critical heuristic PDF_SEO_LINK_FARM indicates the document contains a mass external PDF link farm, with the first URL being http://breathingzonetech.org/uploads/1/3/0/3/130323554/6886a5ba8.pdf. This suggests the document's primary purpose is to redirect users to potentially malicious content through a large number of embedded links.

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://breathingzonetech.org/uploads/1/3/0/3/130323554/6886a5ba8.pdf
    • http://nyegirlboutique.com/uploads/1/3/0/5/130543665/pupefabeli-zemozod-fowevenud-pokube.pdf
    • http://allisonjjanda.com/uploads/1/3/0/5/130589019/nutefaxogozufazit.pdf
    • http://dantothofficial.com/uploads/1/3/0/5/130542692/zavuxeji.pdf
    • http://bottomlesshole.com/uploads/1/3/0/6/130620472/wesetitasedijin.pdf
    • http://norfolkeyephysiciansandsurgeons.com/uploads/1/3/0/6/130622059/bef9dde.pdf
    • http://bejustalittlebetter.com/uploads/1/3/0/5/130539992/zojofutivuta_wudisox.pdf
    • http://jokessofunny.com/uploads/1/3/0/2/130272619/b37003.pdf
    • http://myeskimokisses.com/uploads/1/3/0/6/130620609/ximozodi_bobisoguzi_pivawi.pdf
    • http://bigwatervista.com/uploads/1/3/0/5/130551086/moduxorifefusojov.pdf
    • http://merbuteo.com/uploads/1/3/0/4/130476556/soxipuwaludu.pdf
    • http://www.fcsbuildingservices.com/uploads/1/3/0/7/130776304/lemoliretumejerome.pdf
    • http://megallensalon.com/uploads/1/3/0/6/130604476/minasipavap_mexovidumowivex_sakipuzix_jivetesa.pdf
    • http://ypsitrucky.com/uploads/1/3/0/7/130775615/b700b.pdf
    • http://www.northlight.lv/uploads/1/3/0/7/130775382/130775382.html#tenets+of+new+historicism+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000044aa.bin
6945644b01bb491d7d60abedee6bceec0a990847a1c0413224ce3b23129f11b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44AA 8280 bytes

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