Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6a8f57c5330083…

MALICIOUS

PDF

51.9 KB Authoring application: Smallpdf Desktop
MD5: bb4007fb8cb4995ea78745236803ead0 SHA-1: 8f4a7bee60d0d0e7ee2f90208981006ce4852ee7 SHA-256: ca6a8f57c5330083e746bdb900c6d364e659dfc21f01c6ccaf503a017cc9116d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or distribution network. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier strongly suggest malicious intent, likely related to phishing or traffic redirection. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://stickittolennon.com/uploads/1/3/0/8/130813063/poxeloxi_josipakedux_panutineru.pdf
    • http://lililalune.com/uploads/1/3/0/7/130776672/josotalovefaxofisal.pdf
    • http://studentsmentalhealth.net/uploads/1/3/0/5/130588584/2819864.pdf
    • http://www.thepubhub.services/uploads/1/3/0/7/130738921/9345883.pdf
    • http://treshaimsportfolio.com/uploads/1/3/0/4/130490584/suxetu.pdf
    • http://drquy.com/uploads/1/3/0/6/130640164/fuxarejipo.pdf
    • http://grupadinar.com/uploads/1/3/0/5/130538838/teziw.pdf
    • http://southendliquorct.com/uploads/1/3/0/6/130639160/4006616.pdf
    • http://pdxcabinets.com/uploads/1/3/0/6/130621596/fenigexepudu_vadex.pdf
    • http://cab42.com/uploads/1/3/0/6/130604725/6749325.pdf
    • http://sincerelycam.com/uploads/1/3/0/4/130483286/loligifoxikeno.pdf
    • http://trauma-toolkit.com/uploads/1/3/0/2/130289741/magawibutotezoji.pdf
    • http://www.whatistroublingyou.com/uploads/1/3/0/2/130292013/6300845.pdf
    • http://magnabait.net/uploads/1/3/0/4/130436271/kaxufubezet_demirifimabuvot_kusubagidit_fasusi.pdf
    • http://theaccountantthatlovestech.com/uploads/1/3/0/2/130291996/3641307.pdf
    • http://moderndynamics.org/uploads/1/3/0/6/130639607/raxujigezali_jonafev_ketezebevo.pdf
    • http://greensboromusicteachers.org/uploads/1/3/0/4/130435998/metav.pdf
    • http://applehillteas.com/uploads/1/3/0/2/130289354/bebedoxut_kitore_mapurili_bakenaru.pdf
    • http://velocityproxies.com/uploads/1/3/0/8/130814421/f8bfb5eb380eb9b.pdf
    • http://rptservices.org/uploads/1/3/0/7/130775047/befunovubasipafakizi.pdf
    • http://mohamed-albarasi-academy.com/uploads/1/3/0/6/130604449/a9263.pdf
    • http://www.lightbrightandcozy.com/uploads/1/3/0/6/130621212/6286b46.pdf
    • http://metzgersu.com/uploads/1/3/0/4/130489241/4708253.pdf
    • http://brakeactive.com/uploads/1/3/0/5/130543945/130543945.html#high+amylase+in+pleural+effusion

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c5a.bin
60c9ddd8cc2dc5cf57a79c7df26fbdaf8efa2e236dcaecd0baccfa5a8c2b1671
pdf-font-stream PDF embedded font (sfnt) at offset 0x3C5A 6708 bytes
font_01_sfnt_off00004f51.bin
c75f0f2bc0bad44cef3a1c8b138a6effa760d2d5c16525673b3f1e942aa5d958
pdf-font-stream PDF embedded font (sfnt) at offset 0x4F51 16432 bytes
font_02_sfnt_off00006844.bin
1cfa4a0824a2753d3f0d92defec2d1f0280c969e16504a8ff46361299c136885
pdf-font-stream PDF embedded font (sfnt) at offset 0x6844 8224 bytes