Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b5884dc0309cdc5…

MALICIOUS

PDF

46.7 KB Created: 2021-05-10 14:21:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0982c852e90483c9013dffc3cd68010f SHA-1: a795aae91f23c45a636c4147688868457ea04f60 SHA-256: 5b5884dc0309cdc54c25da2a45b2f4d5147f1f57ce6fa4003fc15143ea73dcec
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF document contains a high-confidence heuristic indicating it's a fake CAPTCHA or human verification prompt, designed to trick users into interacting with malicious links. It impersonates a brand (Facebook) and directs users to a URL that does not match the impersonated brand, suggesting a credential phishing or malware download attempt. The primary malicious URL identified is https://netcdn.xyz/app/431946152/can-i-play-roblox-for-free-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 6

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/can-i-play-roblox-for-free-game-hack.
  • 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 https://netcdn.xyz/app/431946152/can-i-play-roblox-for-free-game-hack PDF link annotation
    • https://www.simplenepaltravel.com/userfiles/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/toolbox-mod_GM479516143.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/robux-download_GM431946152.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-hack-spin-link_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/links-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.simplenepaltravel.com/userfiles/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://rblx.landIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c76.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C76 26616 bytes
SHA-256: 768b4ddb9427da9efb5a856532369def0bcc8504fda9ddbc2404150a355b39bf
font_01_sfnt_off0000897e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x897E 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9368 18512 bytes
SHA-256: e7c9a4fe6870a820981f50b5265581c9404087a1dcd1112df2882e4616f18a1c

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