Malicious PDF — malware analysis report

Static analysis result for SHA-256 797fac7f6476720e…

MALICIOUS

PDF

37.7 KB Authoring application: OpenOffice Draw
MD5: a8509792ae071e7d3ade321a17ca4014 SHA-1: 81c66744d3e8fc397de4fad46eb08f20985b9d99 SHA-256: 797fac7f6476720eb7406cbdb7c8439dc194eab6c533ed96fdd175bf5d506c22
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of 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://tusadubuz.communicationsdataretention.space/uploads/2020/01/27/4322949.pdf
    • http://elementsbodycare.com/uploads/1/3/0/5/130543173/8c6b7c495fa8.pdf
    • https://torerirategusem.weebly.com/uploads/1/3/0/2/130287296/bunukumutuzoduwowok.pdf
    • http://cookingfunbyz.com/uploads/1/3/0/5/130551279/xovoxumejirisal.pdf
    • http://doctors-daughters.com/uploads/1/3/0/6/130603927/7928325.pdf
    • https://jisizonamefip.weebly.com/uploads/1/3/0/2/130273845/migofukiwaxigopogu.pdf
    • http://bawun.evanstonfcu.com/uploads/2020/01/28/8489721.pdf
    • http://18thcenturycraft.com/uploads/1/3/0/3/130313123/lafif-ferezedas.pdf
    • http://nateas.ru/uploads/2020/01/29/f61e2d1332.pdf
    • http://td-detstvo.org/uploads/2020/01/27/pobetipixogedevi.pdf
    • http://homesto.xyz/uploads/2020/01/29/noliri.pdf
    • http://bfaog.com/uploads/1/3/0/5/130543279/9717620.pdf
    • http://dugajiz.sitibaik.ru/uploads/2020/01/28/divadagiwob.pdf
    • http://hobekuntzapsicologia.com/uploads/1/3/0/2/130272496/2673443.pdf
    • https://xedarodevaki.weebly.com/uploads/1/3/0/2/130272332/01eed8ee69.pdf
    • http://jidobeveli.smartmeteo.ru/uploads/2020/01/27/soragalapes.pdf
    • http://trindesigns.com/uploads/1/3/0/2/130271094/bbe979762890.pdf
    • http://jobax.z-kiski.fun/uploads/2020/01/28/0745380270c5.pdf
    • http://786pashtodars.weebly.com/uploads/1/3/0/2/130270738/wirekinuduku_numar.pdf
    • http://turnberrypress.com/uploads/1/3/0/4/130488332/b10964a4c4cad.pdf
    • http://edgelandscapeandmaintenance.com/uploads/1/3/0/4/130488165/130488165.html#bad+blood+synonym+formal

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000015cb.bin
2abc0918dd679f0364e8a54664e882fec1d470dd596f662b6af510311843fbe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15CB 8836 bytes

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