Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffc5c8abc059a6c0…

MALICIOUS

PDF

44.5 KB Authoring application: Scribus
MD5: 1ebf777d88cb1b3f983c6d4911d2058f SHA-1: a3c63bf780c306917385e2bc21c581cc874299cb SHA-256: ffc5c8abc059a6c093c9987b4e2c97a6ceb2bcb32b6515e02c4fe4453b349346
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of embedded links to other PDF files, disguised as a gym workout manual. This behavior is indicative of a link farm or a phishing lure designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly support its malicious nature. The primary attack pattern involves social engineering to trick users into clicking on external links.

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://reor.com/uploads/1/3/0/5/130542953/bubobal.pdf
    • http://melissaneckphotography.com/uploads/1/3/0/5/130551775/eeece.pdf
    • http://nbmgonline.com/uploads/1/3/0/6/130621836/4947690.pdf
    • http://deft-touch.com/uploads/1/3/0/4/130477775/6772526.pdf
    • http://thewaybrea.com/uploads/1/3/0/7/130740260/rikavatexizitat_manulefow_rufakolutag_rawosu.pdf
    • http://nadzorybudowlane-arles.pl/uploads/1/3/0/4/130483817/jirozaruz.pdf
    • http://goldpriceweb.com/uploads/1/3/0/6/130604905/9065918.pdf
    • http://alisonhehir.com/uploads/1/3/0/8/130813804/520496.pdf
    • http://garyroybird.com/uploads/1/3/0/5/130551654/woniledudisor.pdf
    • http://tecnialuminios.com/uploads/1/3/0/5/130539449/06fca0a7d687b8.pdf
    • http://motortrainingtotaal.com/uploads/1/3/0/5/130588893/0481f674f.pdf
    • http://wikipf.com/uploads/1/3/0/6/130621024/sufetanoz.pdf
    • http://teamwrightbrothers.com/uploads/1/3/0/4/130476255/tixofigakovamizug.pdf
    • http://pwcatl.org/uploads/1/3/0/2/130292073/219018745.pdf
    • http://glammeshops.com/uploads/1/3/0/6/130603874/bosesatopubim.pdf
    • http://journeylaurel.net/uploads/1/3/0/6/130604152/fb2bbc.pdf
    • http://x-staticapolefitness.com/uploads/1/3/0/6/130604948/sazinutulaxegu-wituzidonup-pimeperepusalu.pdf
    • http://elizabethtleern.com/uploads/1/3/0/6/130605502/ba2c51122d07d.pdf
    • http://northcoloradomedevac.com/uploads/1/3/0/5/130589308/e0a96a3b72fd5c.pdf
    • http://carloscastellanos.info/uploads/1/3/0/6/130620576/tukijezewew-vobeviwijisab.pdf
    • http://nahsesouthflorida.org/uploads/1/3/0/5/130539553/lolejizaporirameta.pdf
    • http://bisforbravo.com/uploads/1/3/0/6/130620483/faxokafiba_rujetosap_nokofidipe.pdf
    • http://cityonloc.com/uploads/1/3/0/3/130323184/130323184.html#gym+workout+manual+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c71.bin
592a12d96ea7ddf4d337a4b2e8f409f51723f4701341877f1040b5929e22e867		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C71 8232 bytes

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