Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e4ff2b77086b59…

MALICIOUS

PDF

77.7 KB Authoring application: Karbon
MD5: 07a8b34664f39a7c7cde96a8dc6fe071 SHA-1: ef923ade68dbdde1368cf527221d471c1c7c304b SHA-256: 63e4ff2b77086b597bdebdc997f9f65f69c0515372b523878c1c30603289d152
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to other PDF files hosted on various domains. This suggests a tactic to manipulate search engine results or distribute a large volume of content, potentially malicious. The ML classifier and ClamAV detection further support its malicious nature, classifying it as phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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://thisbodyisnetworked.com/uploads/1/3/0/8/130874180/6d235a9c.pdf
    • http://stjosephsbroomhouse.org.uk/uploads/1/3/0/5/130588435/jigar.pdf
    • http://ivcbrighton.com/uploads/1/3/0/6/130621591/9372927.pdf
    • http://oaktreecapllc.com/uploads/1/3/0/6/130604488/8e96bccdcc1d1d.pdf
    • http://www.crossroadscdl.com/uploads/1/3/0/2/130273589/d4b845d9b.pdf
    • http://moikaitrading.com/uploads/1/3/0/3/130323322/pubudu.pdf
    • http://mylifesuccessformula.com/uploads/1/3/0/7/130739039/nawoginu.pdf
    • http://blackfishmanresa.com/uploads/1/3/0/7/130738666/lezejitodobun_bulinibig_mosamoxegezolup.pdf
    • http://webdisk.vfcsa.org/uploads/1/3/0/8/130874384/4417975.pdf
    • http://drconsultinginc.com/uploads/1/3/0/6/130603942/juromaxe_soseg.pdf
    • http://woccraleigh.com/uploads/1/3/0/3/130313541/5022771.pdf
    • http://houstonasta.voyagerwebsites.com/uploads/1/3/0/9/130970015/130970015.html#japanese+adjectives+antonyms
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://www.adobe.com/).Noto
    • http://www.google.com/get/noto/http://www.adobe.com/type/This
    • http://scripts.sil.org/OFLNoto

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032c5.bin
1d1fa5121415f8f5353993473374918b9d2a38f433752094af4cce5d3be72c8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x32C5 16312 bytes
font_01_sfnt_off000047ef.bin
83459e82cebe561b9e65dda6a09953c9e35f75e5df0fa62a624e1833cc5b8086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x47EF 1708 bytes
font_02_sfnt_off000053d6.bin
b10c7ba1c983dc5756d7fb8fb9f79e5c5b10bc237eb862cdb3acf1ce20b46953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53D6 44892 bytes
font_03_sfnt_off0000dac0.bin
da04d7b5fa86c0c92e082871a8bc257644385cb09d23d5a202924f9ede36383a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC0 8092 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.