Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaad8b349c431698…

MALICIOUS

PDF

43.0 KB Authoring application: OpenOffice.org First seen: 2020-09-24
MD5: 623c8431bf58133b3a261cf3511c34ec SHA-1: 9a7ae18dc037188a101dda43859ab3dda3c38961 SHA-256: eaad8b349c43169891bb9ce53147ba2b9cd4f85fa920219a0c8a1e06752e3ea8
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a mass external link farm, directing users to numerous other PDF files hosted across various domains. This behavior is indicative of SEO manipulation or a distribution network for malicious content, as suggested by the ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. No scripts were extracted, limiting the analysis of direct payload execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://capitalmetal.com/uploads/1/3/0/4/130436271/628271.pdf In PDF document text
    • http://lumivox.net/uploads/1/3/0/7/130740148/3987407.pdfIn PDF document text
    • http://www.likelystories.ca/uploads/1/3/0/6/130603838/jaratinazevokar-lazoxaparanut-tujapikapufuxo.pdfIn PDF document text
    • http://www.xyztrivia.xyz/uploads/1/3/0/6/130621238/50543c.pdfIn PDF document text
    • http://saeart.com/uploads/1/3/0/4/130483184/xujibazix-vimogonelex.pdfIn PDF document text
    • http://thisweeksbestdeals.com/uploads/1/3/0/4/130475964/bcb519.pdfIn PDF document text
    • http://completecarechiropractictables.com/uploads/1/3/0/2/130272083/17cf7278485787d.pdfIn PDF document text
    • http://kevinzhou.org/uploads/1/3/0/7/130776026/vijuxadujono.pdfIn PDF document text
    • http://45oakridgelane.com/uploads/1/3/0/6/130639241/8851387.pdfIn PDF document text
    • http://thoughtstrashbin.com/uploads/1/3/0/6/130605299/4807707.pdfIn PDF document text
    • http://mymed.care/uploads/1/3/0/6/130621892/zijesaropokagesej.pdfIn PDF document text
    • http://firefightrobot.com/uploads/1/3/0/7/130775252/dotonofarisureko.pdfIn PDF document text
    • http://briannamalottinteriors.com/uploads/1/3/0/7/130739544/latujanofepo.pdfIn PDF document text
    • http://omartejeda.com/uploads/1/3/0/6/130604287/303b46b2de3f0.pdfIn PDF document text
    • http://upgradelearning.com/uploads/1/3/0/5/130546392/noxukoxufu_dowetirex_mesuxumiramasej.pdfIn PDF document text
    • http://slipperyscents.com/uploads/1/3/0/7/130740324/mutotib_wiguf.pdfIn PDF document text
    • http://santaluciadopiai.com/uploads/1/3/0/5/130550787/5988091.pdfIn PDF document text
    • http://approvedvirtualassistants.com/uploads/1/3/0/8/130874530/3046787.pdfIn PDF document text
    • http://loeloh.com/uploads/1/3/0/2/130272362/4432989.pdfIn PDF document text
    • http://confidentrider.co.uk/uploads/1/3/0/5/130550681/39da6e0533b3968.pdfIn PDF document text
    • http://collincurry.com/uploads/1/3/0/6/130621387/3250928.pdfIn PDF document text
    • http://pack860hb.com/uploads/1/3/0/6/130639575/8958064.pdfIn PDF document text
    • http://browngreasefuel.com/uploads/1/3/0/5/130588624/0bc46b7.pdfIn PDF document text
    • http://soontravelagency.net/uploads/1/3/0/8/130813846/dedikeluvot.pdfIn PDF document text
    • http://74-123-77-90.mgwnet.com/uploads/1/3/0/8/130814508/130814508.html#verbo+essere+latino+presenteIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BE5 16084 bytes
SHA-256: d65752e558a9090157c9a1b02647c04d2680198cf9d52ff42939ef8ccbf7fabd
font_01_sfnt_off000043a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43A4 9328 bytes
SHA-256: 83c949c91d62f55a42243e0c605f189622f8d45980534c0204f8bceec69c5321