Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b5898bf113c7978…

MALICIOUS

PDF

41.1 KB Created: 2021-05-16 23:30:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0998483b915a803d82922e68cec252a4 SHA-1: 16be2963c180a660aaec50bde486ba1b6582a964 SHA-256: 4b5898bf113c79787f85d1fb7b58793d59868768216bf83a26830a0dea88b1b4
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 0.9971

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.xyz/app/479516143/minecraft-free-minecraft-game-hack PDF link annotation
    • https://my-private-intendant.com/images/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/my-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-hacks-android_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-map_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-robux-generator_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_003_off0000479d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x479D 24732 bytes
SHA-256: 0512922e92eaee7f126ce75709f46577a97a70999d66bad7db6c772112ed3648
font_01_sfnt_off00008078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8078 17568 bytes
SHA-256: 2778e064ee8e4e3a4bd3984a17bb7eaaeefaa41a67eb131b8ade69fe1653bbfc

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