Malicious PDF — malware analysis report

Static analysis result for SHA-256 c91386334ff66570…

MALICIOUS

PDF

33.1 KB Created: 2021-06-18 17:46:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: e621cbd89ce48594f3f79aa54cc433f0 SHA-1: 2bac3e85122180fb824b1f36c4429499baa37fde SHA-256: c91386334ff6657071437187a8a528f575761e1cfc4168b18511f48002eb7ed0
74 Risk Score

Malware Insights

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

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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.co/app/431946152/husky-free-robux-game-hack PDF link annotation
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-100-works_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-rules_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://www.kraftyzone.com/uploaded_files/userfiles/files/robux-in_GM431946152.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_off000031d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D0 22332 bytes
SHA-256: 7e08cb096344c061fbdcea31a584ba33674f250911e2ba37eb1f3c3c9e442ae8
font_01_sfnt_off0000637d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637D 19068 bytes
SHA-256: a9a0f707d7c6fda6583ac53f67a4c8005c5efba186aace364b1766169c214f74

Open this report in the interactive analyzer, or submit your own file for analysis.