Malicious PDF — malware analysis report

Static analysis result for SHA-256 599aff178647f3ec…

MALICIOUS

PDF

44.7 KB Created: 2021-06-03 23:23:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c1f85d0c654ebfc869ddfd333cefe53c SHA-1: 44f1405bf1aa40a59fa806a4f943404a15e67916 SHA-256: 599aff178647f3eceaa5140bad4514352d50e61fe2fff4d00de4e447c4617003
102 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses a QR-code lure. 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 0.9865

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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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.online/app/479516143/minecraft-creative-mode-free-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/games-for-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/pubg-uc-unipin_GM1330123889.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/2021-free-spins-coin-master_GM406889139.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
font_00_sfnt_off00005411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5411 25652 bytes
SHA-256: ac5da7c4521051aae1f4951b4cc6d313bfa1f573036322741265aadf9ac7d12d
font_01_sfnt_off00008cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF4 18000 bytes
SHA-256: f6a8cbfed7e544a7ed90cd1995fc8c45102f25219f8fae40911eda120a1a4630

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