Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea10e9d2ff0cef5…

MALICIOUS

PDF

46.5 KB Created: 2021-06-04 03:48:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 78dbb88c4d33ba6b0ca80b21747da66e SHA-1: 940667bb31ce9ec7679ea6115563580bc3e0f0c8 SHA-256: 8ea10e9d2ff0cef5be174a3c53a6aa9e691649790bbe3922404bcd1e5d60fcf7
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 0.9748

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/claim-robux-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/tiktok-free-robux-hack_GM835599320.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/master-game_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-giveaway-live-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/master-8-ball-pool-free-coins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-pokemon-go-accounts_GM1094591345.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • https://www.roblox.coIn 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_004_off00004fd2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD2 25340 bytes
SHA-256: dc071f82a2415ed280e56692db24ee75c1f5452f16dba501b8a54b82c71d69e2
font_01_sfnt_off0000885f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x885F 2880 bytes
SHA-256: 680cee9962ed9b8340f32eb4497b4a869b674082cb72c24c089fa73c4597fa7a
font_02_sfnt_off00009235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9235 18532 bytes
SHA-256: 5f88bcb9a20179fc356a8464fa62ff550b3c80ad45ddbf6fdbf78de33d5b2b60

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