Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f1f9a89918c30d3…

MALICIOUS

PDF

35.2 KB Created: 2021-07-02 09:10:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: daec86abe0795cc0511b542138ac2cb4 SHA-1: 72f3481daf11fb3ffd9bcf6080d35e204d0645ec SHA-256: 5f1f9a89918c30d3958255402f70d16366c27100ff878867c186a794687959fd
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 0.9980

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 http://netcdn.co/app/406889139/how-to-get-stuff-that-cost-coins-free-mcpe-master-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/how-to-get-any-gamepass-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-hack-2021-no-human-verification-pc_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/olais-only-robux-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-accounts-2_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/cheat-tembus-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/cheat-engine-64-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-phantom-forces-beta-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-actually-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-hack-no-verification-2021_GM406889139.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_002_off00003277.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3277 22976 bytes
SHA-256: d0503d7403808a73c499fc43850234e699600bab3ddebc5316e25ad61575d1de
font_01_sfnt_off00006611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6611 18644 bytes
SHA-256: 27c5b0c493246218682d278be1d5b8350beffe41780a09c36db3607ad1c65035

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