Malicious PDF — malware analysis report

Static analysis result for SHA-256 67fbb19769db2fae…

MALICIOUS

PDF

42.3 KB Authoring application: Soda PDF First seen: 2021-09-17
MD5: 97fa0de3a11f3d39f159d9f79c5b3fca SHA-1: e4d410c6a58b10e986ff3fece246ce3a433f5a9e SHA-256: 67fbb19769db2faee2f4b497eb367fff1e3123e6350e093d7c2c575c5fb08eff
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm, which is a common tactic for phishing and malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malware. The document body's garbled content and the presence of a password-protected archive lure heuristic suggest the PDF is designed to trick users into downloading a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 https://ripinina.weebly.com/uploads/1/3/0/4/130476401/pevigefise-rupuwaremudil-gulivul.pdf In PDF document text
    • https://leladizuxem.weebly.com/uploads/1/3/0/4/130489572/kirasuwaworakivux.pdfIn PDF document text
    • https://tikelifo.weebly.com/uploads/1/3/0/4/130436095/ganelavisoku_nokuvadukituzu_fugade_pagamuminuw.pdfIn PDF document text
    • https://duwufanovivag.weebly.com/uploads/1/3/0/2/130273789/bijejaw-jevad-rexezegojuwajav-tujir.pdfIn PDF document text
    • https://fetanafar.weebly.com/uploads/1/3/0/4/130476921/c45509.pdfIn PDF document text
    • https://definanisuvanap.weebly.com/uploads/1/3/0/4/130476607/8176299.pdfIn PDF document text
    • https://tigudowomapap.weebly.com/uploads/1/3/0/4/130436159/796a5e6d77ea.pdfIn PDF document text
    • https://vavobavubiwi.weebly.com/uploads/1/3/0/2/130270892/fofovelokidarijazuz.pdfIn PDF document text
    • https://rarinuxafagid.weebly.com/uploads/1/3/0/4/130488694/zupusukigawenagonu.pdfIn PDF document text
    • https://tiletanaxutije.weebly.com/uploads/1/3/0/3/130324004/5093167.pdfIn PDF document text
    • https://mufuwidezamuj.weebly.com/uploads/1/3/0/5/130547552/130547552.html#e+balbharati+question+paper+10th+class+2019In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A7 8200 bytes
SHA-256: a9617f003acb94ce33cf0935b0a8cb838cbc480ef07faba49c98dcde64f8a4c1
font_01_sfnt_off000057c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57C5 2600 bytes
SHA-256: 63f5e27ee3d24cc00d413e59c301cc73ab377383609796993547673f2bea898c
font_02_sfnt_off0000606b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x606B 7180 bytes
SHA-256: c92cdcb15becab0908c504c40a82514510e9b5b4c9e2b59c5b09d7d1c581980e