Malicious PDF — malware analysis report

Static analysis result for SHA-256 8255d01a3b60b9a9…

MALICIOUS

PDF

62.3 KB Authoring application: Nitro PDF
MD5: 1f4a76ef92cd17a12863cdaaf6d5418e SHA-1: f78f0599e87ce276c0cbdbe610d3f27d29472780 SHA-256: 8255d01a3b60b9a997c0669af0d762c5f64e96b25cdcf39f1617904156314590
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV specifically identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs likely lead to further malicious content or phishing sites, and the document body's garbled text suggests it's not intended for legitimate user consumption.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://mint-uk.com/uploads/1/3/0/8/130813953/nemivowufuwudar-wixulom-gimakokifik.pdf
    • http://www.carla-grace-blog.com/uploads/1/3/0/3/130313102/pimizafafodupa-rexibowu-dodumil-ginikibarujuno.pdf
    • http://coreenergysolutions.com/uploads/1/3/0/4/130483487/biwasunitipibunilu.pdf
    • http://interacting.services/uploads/1/3/0/7/130775209/da4962d.pdf
    • http://www.sth-168.com/uploads/1/3/0/7/130775542/wumirazagove-reseviwopiw-fubezonibosu.pdf
    • http://ssjohn832.com/uploads/1/3/0/2/130288571/9380028.pdf
    • http://icomedy.club/uploads/1/3/0/4/130489029/xuwiramof_zolazedawoga.pdf
    • http://vex7.net/uploads/1/3/0/4/130483625/0ab59f9c0.pdf
    • http://popebuster.net/uploads/1/3/0/4/130477083/savigijederi.pdf
    • http://rackyspeckevents.com/uploads/1/3/0/5/130543663/c9c98.pdf
    • http://nijacode.com/uploads/1/3/0/5/130588721/zavafikisifolijosori.pdf
    • http://flyingmonkeyfilms.co.uk/uploads/1/3/0/6/130639285/5adf65e.pdf
    • http://newlegendpictures.net/uploads/1/3/0/7/130775129/maginujugegir.pdf
    • http://hostmaster.iglooimages.com/uploads/1/3/0/5/130590538/wufopirix.pdf
    • http://enderman.org/uploads/1/3/0/6/130605355/3914d5a241.pdf
    • http://multifaithstorytelling.org/uploads/1/3/0/7/130739053/ruvevamukuxuzajavi.pdf
    • http://taboozeshow.com/uploads/1/3/0/5/130545581/0e79fd3ec3.pdf
    • http://hasbropowerrangers.com/uploads/1/3/0/5/130588961/vusoz.pdf
    • http://www.acollinsworth26.com/uploads/1/3/0/6/130603798/zekofebenon_kateguxoxax_sitamex.pdf
    • http://wendtauto.com/uploads/1/3/0/6/130639357/3cbfd83.pdf
    • http://feministtherapy.org/uploads/1/3/0/8/130814644/gesoxupemed.pdf
    • http://mig-computer.org/uploads/1/3/0/4/130476144/rimewujofo.pdf
    • http://cybercrimenyc.com/uploads/1/3/0/5/130550895/lolijuviwobebusato.pdf
    • http://www.worldrugbyjournal.com/uploads/1/3/0/7/130775031/navimi.pdf
    • http://projectindigo.co/uploads/1/3/0/7/130739234/4147948.pdf
    • http://hostmaster.4140designs.com/uploads/1/3/0/6/130639479/130639479.html#business+plan+for+ecommerce+startup+in+india+pdf
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001640.bin
47832e91f4e9c99878a007b26e91038e411628cac7d19d228b73394677e9f267
pdf-font-stream PDF embedded font (sfnt) at offset 0x1640 8972 bytes
font_01_sfnt_off0000ae14.bin
d576e2173e5bafe917a889f060d97b375f93f6490bf8fd275835fe3c202e68de
pdf-font-stream PDF embedded font (sfnt) at offset 0xAE14 6168 bytes