Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b61638bcee3432…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 22:26:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 562e45eafbbeb2ad8a3e8c3ed07bdb28 SHA-1: dad7466e6ae6e3d32990e04c7772036aaac102fe SHA-256: f1b61638bcee3432ac4b7723167d96547a04cdaa58382c7f0a8e076272035dd8
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 0.9865

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 https://netcdn.online/app/431946152/robux-game-hack PDF link annotation
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/hack-the-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/minecraft-images-free_GM479516143.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/robux-rewards_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/free-robux-app_GM431946152.pdfIn PDF document text
    • https://digilib.stkip-pgri-sumbar.ac.id/repository/websites-that-give-free-robux_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
stream_004_off0000511b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x511B 27304 bytes
SHA-256: 062fe55e86cd5e8bfd6f7822d1a8e16c26605f332e1f5d980d812297d4c7b49e
font_01_sfnt_off00008efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EFC 17852 bytes
SHA-256: ccf20ca1ad80d0cd2f0d464461636129858ae353cf2c3769b35ef20048afdef0

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