Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fc1adc3a438db00…

MALICIOUS

PDF

39.2 KB Authoring application: PDFedit
MD5: a7bd901d4ed3e86957deedf8747950cc SHA-1: 1d466bfc113ed2553efd4d975aaa2714557d92de SHA-256: 0fc1adc3a438db00aa1794ffabe715275e8431f86164acfcdca5f35f59dc3e64
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to potentially harmful content.

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://muziekkapel.be/uploads/1/3/0/5/130588407/f610a66c1133730.pdf
    • https://bafonaxewul.weebly.com/uploads/1/3/0/2/130272600/gadonoku.pdf
    • http://nixulima.iclaudia.online/uploads/2020/01/28/7467302.pdf
    • http://dancinglotus.org/uploads/1/3/0/2/130291588/jokopuzamefuxun.pdf
    • http://survivalaugsburg.weebly.com/uploads/1/3/0/6/130639822/cb263db.pdf
    • https://fopezizevel.weebly.com/uploads/1/3/0/4/130489346/domasexegaruk-bilapa-vekomed.pdf
    • http://maxawime.palenko.ru/uploads/2020/01/29/9203091.pdf
    • http://gipexete.desarrollo365.com/uploads/2020/01/27/8390054a.pdf
    • http://tosozowip.bronline.club/uploads/2020/01/27/budadolejawu-dadewiko-dolawadoli-bafotuxenibu.pdf
    • http://nigazamex.3destate.ru/uploads/2020/01/28/6641155.pdf
    • https://ninanuzanuzi.weebly.com/uploads/1/3/0/5/130590582/17129232e7b74e9.pdf
    • http://sebefawan.kaluga-land.ru/uploads/2020/01/29/1037131.pdf
    • http://cyberliabilitypro.com/uploads/1/3/0/5/130589252/norowola.pdf
    • http://rega.garyschuen.com/uploads/2020/01/27/ba48868a1b5d3.pdf
    • http://fozap.aksenovaphoto.com/uploads/2020/01/29/4751574.pdf
    • http://loveandlightbylee.com/uploads/1/3/0/4/130488851/gobebutuxefudib.pdf
    • http://shelleyortner.com/uploads/1/3/0/2/130273843/lizagidelu-noseri-geseniroxoxowiv-bamez.pdf
    • http://vofe.modernkutu.com/uploads/2020/01/29/ledisaxamu-zolet-potomigasupal.pdf
    • http://montrealbachelorweekend.com/uploads/1/3/0/2/130287989/dd2df.pdf
    • https://suronibezefebo.weebly.com/uploads/1/3/0/3/130323437/f1778e23b02a02.pdf
    • http://nevo.modafactory.ru/uploads/2020/01/27/67c69.pdf
    • http://allergy.mediutopia.com/uploads/1/3/0/4/130436390/130436390.html#fraction+to+decimal+to+percent+worksheet+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001650.bin
10783959956d7766fe16381e6c9298a043f17370ff674deb61e38305695040fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1650 7620 bytes

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