Malicious PDF — malware analysis report

Static analysis result for SHA-256 977aba33c647980c…

MALICIOUS

PDF

45.5 KB Created: 2021-05-30 09:25:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4048569598c42021fbc613c94133d04e SHA-1: 7cfeb6e12ac025f1ef4514b0c86b8e18901649b1 SHA-256: 977aba33c647980c2af0f805f69dc101343508f358c3c01ae1ba5bbd1cc9ae88
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains a lure for a game hack, directing users to a malicious URL. It also presents a fake CAPTCHA or human verification prompt to trick users into interacting with the malicious link. The primary goal appears to be social engineering users into visiting potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9580

Heuristics 5

  • 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
  • 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/roblox-jailbreak-hack-game-hack PDF link annotation
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-free-version_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-tiktok-followers-no-survey_GM835599320.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000051b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B6 26976 bytes
SHA-256: 46d067e10ed579f45c1410ddb3b9602a5c13e48ad381b24a7153ea367260d6dc
font_01_sfnt_off00008e8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8D 18468 bytes
SHA-256: deecbf3382f29be7f744c5f376599cf902ae77510bc823f5987ac0412c139863