Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a1807ef6158e08…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 19:17:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2b63088fd2064358067adfbfe3e412ed SHA-1: 2583d913da8817e1aafff5aa0694dce7a6682b87 SHA-256: 24a1807ef6158e0855591cf5f33f52251301277ffb100dd5028112ac99e1914b
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/406889139/coin-master-coin-link-game-hack PDF link annotation
    • https://esl.ipb.ac.id/images/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/clean-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • https://esl.ipb.ac.id/images/robuxglobalcom_GM431946152.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_003_off000048c3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C3 25180 bytes
SHA-256: 076c798f5a9d4f4bf4fc985fda9f10b6a9f98ab7f0cd1ede9565aaefe16e97dd
font_01_sfnt_off000082f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F4 17716 bytes
SHA-256: 6b6be525affa70ffc107ac4c88dd9d04ef97920621a7989faf1a85e6391895c0

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