Malicious PDF — malware analysis report

Static analysis result for SHA-256 4536ef6310ec5764…

MALICIOUS

PDF

47.6 KB Created: 2021-06-10 14:25:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a99c70dea4c6d9ca9133b31a231b2ab5 SHA-1: 1b4f1412ebc0a5bc887d762471223ece952381f5 SHA-256: 4536ef6310ec5764e44f08de08eb5c196a6759670db03b4ca9b062428012f911
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 0.9832

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.tw/app/431946152/how-to-kick-someonein-free-draw-2-roblox-game-hack PDF link annotation
    • https://library.sttbandung.ac.id/repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-hack-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/roblox-bgs-cheats_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/tiktok-free-view-iphone-join_GM835599320.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/roblox-free-custom-shirts_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/does-roblox-give-out-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/roblox-hack-in-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://library.sttbandung.ac.id/repository/coin-master-hack-xyz_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_004_off00005257.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5257 28896 bytes
SHA-256: 65c4f996b6da713541064bf14240bbf1899ad4041e7a3ef67077be43d23c573b
font_01_sfnt_off000094f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94F0 19184 bytes
SHA-256: a134293af81e1290d90af7cedfdfacb0bbafa5386bfec4614721b3284aa969c4

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