Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2636e41526306b1…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 05:21:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dc54807622d730a88fd0acd65f4a1f37 SHA-1: 18678775f0ea5ac4fe8c281c1b48d0bead7df41d SHA-256: c2636e41526306b1531a0db4b552de52733004eeab8f028a6fd590bd38ac0e17
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://netcdn.tw/app/431946152/how-do-you-get-free-robux-game-hack PDF link annotation
    • https://irecruitersafrica.com/ckfinder/userfiles/files/free-good-roblox-exploit_GM431946152.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/roblox-how-to-get-free-gear-2021_GM431946152.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/roblox-pokemon-legends-hack_GM431946152.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/roblox-hack-week-2021_GM431946152.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/roblox-hack-app-no-survey_GM431946152.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/free-roblox-admin-hack_GM431946152.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/how-to-script-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/roblox-new-code-for-free-sword_GM431946152.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/free-pet-treats-coin-master_GM406889139.pdfIn PDF document text
    • https://irecruitersafrica.com/ckfinder/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_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_off000030f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30F7 21916 bytes
SHA-256: 29fff0ea1ae517488bbb3df05228bdb300e5ffcf9bca2b2681faee6e77c40ed8
font_01_sfnt_off00006118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6118 19316 bytes
SHA-256: 99209f55b8a3eadb57fc79f11dd938dc70b993b67b3cdd4e22b37a6312af6b20

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