Malicious PDF — malware analysis report

Static analysis result for SHA-256 14430ea32bc6722f…

MALICIOUS

PDF

46.9 KB Created: 2021-05-13 12:30:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6ae33bceef6bbb1c981fbae5279791d7 SHA-1: 914b4185827730bad74ceb7a330de324ee063195 SHA-256: 14430ea32bc6722f299706c3d04799d04d0fb22e9866864692c3611a423be3e4
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 0.8948

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/431946152/how-you-get-free-robux-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-generator-tool_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-roebucks-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A29 24576 bytes
SHA-256: 977cdb200852170686a013528e8e4ef8fab5930ecd28fb01116ccc86be813d7d
font_01_sfnt_off000082a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82A1 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_02_sfnt_off00009484.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9484 18444 bytes
SHA-256: d3aeb47c5138bb2f7afdc1cd1986e008461219f841fd4d3ae6acb877e9db5a0e

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