Malicious PDF — malware analysis report

Static analysis result for SHA-256 8896b1566cc69046…

MALICIOUS

PDF

42.5 KB Authoring application: Scribus First seen: 2020-09-15
MD5: d96f5f06ccd0024cf31f5a45113a3f0e SHA-1: 78292a1166bbfbbde3af85427fd616788ee71b79 SHA-256: 8896b1566cc690467014fae9c5e5fedcce4a034c65b38ed4e306a40cd52e4edd
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document employs a social engineering tactic, masquerading as a study guide to trick users into downloading and viewing external PDF files. This behavior is indicative of a phishing or malware distribution scheme, as evidenced by the numerous external links and the 'Browser extension / update installation lure' heuristic. The ML classifier and ClamAV detection further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://derekloginoffshoretrust.com/uploads/1/3/0/2/130291575/7001177.pdf In PDF document text
    • http://pacesettersinstitute.com/uploads/1/3/0/5/130588232/lazitejin_tobururolo_seziwijugeruja.pdfIn PDF document text
    • http://muchzeal.com/uploads/1/3/0/5/130539450/memefulusimi-fevogizesoz-julikudexifag-bawojugopote.pdfIn PDF document text
    • http://adriana-bachmann.com/uploads/1/3/0/6/130605190/weraligukusepari.pdfIn PDF document text
    • http://rrhsartclub.com/uploads/1/3/0/6/130604161/sesipukapigap_vegezeradasidom_gulen.pdfIn PDF document text
    • http://tafski.org/uploads/1/3/0/5/130540504/1c88534915.pdfIn PDF document text
    • http://staywhole.net/uploads/1/3/0/2/130270799/vaguradomimi_rusogo_vemefejo_fivisozekiv.pdfIn PDF document text
    • http://nakedyogadallas.com/uploads/1/3/0/7/130740232/4daeaeaffeba.pdfIn PDF document text
    • http://royalglossbrat.com/uploads/1/3/0/5/130546153/046dcd5b7d.pdfIn PDF document text
    • http://clutteroftheday.com/uploads/1/3/0/5/130551219/6008130.pdfIn PDF document text
    • http://steverodemsconsulting.com/uploads/1/3/0/6/130620626/6232313.pdfIn PDF document text
    • http://norciagala.com/uploads/1/3/0/6/130620563/130620563.html#togaf+9+foundation+study+guide+4th+edition+pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000133e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133E 8176 bytes
SHA-256: 7a7a794cc126308cfb9a855ae9fe79139f1c9954e484d625ef4a3b1d04f48138
font_01_sfnt_off00005f8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8B 16068 bytes
SHA-256: 6db2f878e0fd57d3a351d0d81a5ccd7b58f68df6728dadc3aee3ebeb1a1d6e60

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