Malicious PDF — malware analysis report

Static analysis result for SHA-256 46c8ae295911e29f…

MALICIOUS

PDF

45.3 KB Created: 2021-06-11 03:58:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ed2623e7c005c0bc391585d928c12f94 SHA-1: 1f0e9559711f3ad5ac6321dac03a5182a885e753 SHA-256: 46c8ae295911e29fdfa9de0af2351609836f147e1806c75e9aca3870282f7ea5
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based 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 0.9864

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.tw/app/431946152/roblox-martial-arts-battle-arena-cheat-engine-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/robux-converter_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-hack-super-simon-says-in-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-scythe-script-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-sql-injection-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/daily-free-spin-coin-master-link_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
stream_004_off00005111.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5111 25628 bytes
SHA-256: 13200f98d1675bb14ad41d623d5536d872d4789747a5d17da1a339dc45e370d9
font_01_sfnt_off00008ca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA5 18888 bytes
SHA-256: e3801bf765cab0026ee8a74fb86f14f45368dccb2d19023ac43ec9fdd87dac08

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