Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5e504e14857fdf6…

MALICIOUS

PDF

45.5 KB Created: 2021-06-03 22:55:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 92be1ae2bbe5f7bc081df2e3bf90e44d SHA-1: 38bd997af6158b0ab6008abf4779c3219e34a162 SHA-256: c5e504e14857fdf60e4b08937b3ce98277139f14262d6d2b36e8a39ff85298c2
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 0.9864

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.online/app/431946152/how-to-get-free-robux-on-iphone-game-hack PDF link annotation
    • http://abdinusababellibrary.ac.id//repository/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/wurst-18_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/descargar-roblox-hackeado-2021-para-android_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id/repository/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coinmaster-spin-ml-free_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/games-that-give-you-free-robux_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_004_off000051a5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A5 26728 bytes
SHA-256: c7e1f7e90d82d50ecb41d22dea4e90e3370902392000eaa0d2b9fc9ae725a562
font_01_sfnt_off00008e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E66 18624 bytes
SHA-256: 22426b865d680281cc4768d4f40ba725f59186fc510e45c7c95a1e6bea128c39

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