Malicious PDF — malware analysis report

Static analysis result for SHA-256 63aaf8599e094c9a…

MALICIOUS

PDF

42.2 KB Authoring application: Scribus
MD5: 3adb9032462d2686e058a241a255730d SHA-1: 481f25275693704ecf6d6f915ed2f68cde0f82c1 SHA-256: 63aaf8599e094c9a08c6e24e170825e536c6e95a967546d315c477897079c454
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links disguised as movie download links, which is characteristic of SEO spam or phishing campaigns. The heuristic PDF_SEO_LINK_FARM specifically identifies this behavior, and the ML classifier and ClamAV detection confirm its malicious nature. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://sparkmediasf.com/uploads/1/3/0/5/130543740/e1cec370.pdf
    • http://digoryswardrobe.net/uploads/1/3/0/5/130539706/dokofavinife.pdf
    • http://reneteassuredtitleagency.us/uploads/1/3/0/4/130489102/tovolenegezopi_metasegap.pdf
    • http://callowayumc.org/uploads/1/3/0/3/130323532/sonabitaz.pdf
    • http://jepojurajo.doctsarev.ru/uploads/2020/01/29/4083379.pdf
    • http://quantuminstruments.com/uploads/1/3/0/5/130588922/gebokipowi-mabarikeb-nuwepiwawonepo-redesabu.pdf
    • http://shardexplorers.com/uploads/1/3/0/8/130815095/130815095.html#maze+runner+1+full+movie+download+in+hindi+bolly4u
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011de.bin
84b404a551cd13976c3202ac24de68fb4d313587088fc887fc4254a18864c781		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DE 8796 bytes
font_01_sfnt_off00005c65.bin
598b436daaf3d122157f8aae4d95cb5f98998d7541b527c84c982bd0659a624f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C65 16888 bytes

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