Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63c05d7cadc616d…

MALICIOUS

PDF

48.8 KB Created: 2021-06-03 09:15:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0ecc2b8e069b0cf8d98b68b7b98fc0b8 SHA-1: 53c716c9694e3b05070f56bf83a1dad876e1eae4 SHA-256: e63c05d7cadc616d4b3a6eb37ec9940e7581c5515f816427ef6b094861451ded
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack lure, specifically pointing to a URL designed to trick users into downloading potentially malicious content. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URL itself is the primary indicator of malicious intent, likely serving as a redirector to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/roblox-lua-scripts-hacks-money-game-hack PDF link annotation
    • https://lib-stie.yai.ac.id/repository/old-roblox-accounts-for-free_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-free-pin_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hacker-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/pokemon-go-free-gold_GM1094591345.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51B2 25432 bytes
SHA-256: ce9f811a97e6d8c1c4a6a371ef42708d787304d27c1a0d7cdc07831a86837e17
font_01_sfnt_off00008cae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CAE 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000099c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99C0 19100 bytes
SHA-256: 4c33e5208464e3ca23483177258e3e9ea8e32902e70f543155ecaf94c3ccb747

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