Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbbc65a6eb194708…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 23:44:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 84f2bebb38e975701d23aadce21b5f43 SHA-1: 2c0e211b6f71a953aa565e633469982baec808ac SHA-256: dbbc65a6eb19470854f7bd16f43e958606d3f417c5fa37a4ab46155ac0b2a19b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure, specifically for 'Coin Master'. The embedded URL, https://netcdn.online/app/406889139/coin-master-free-spins-fb-game-hack, is the primary indicator of malicious intent, likely leading to a phishing or malware distribution site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

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/406889139/coin-master-free-spins-fb-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/pubg-uc-20210_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/collect-robux_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/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-links-for-free-spins-2021_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_004_off00005054.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5054 24732 bytes
SHA-256: b678f44e270039f6355817ca3d2cebd846a5d1a6ddb6b2ca2daf8c4b6047ef39
font_01_sfnt_off000088d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D7 2820 bytes
SHA-256: e5f6ec650849eefe6bc6a1649c2875ce35328d23e4196945bba66cc43e5a49d4
font_02_sfnt_off00009275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9275 18044 bytes
SHA-256: 0aee28c7ef374c5994b2d385534bd279b29819e2648a735201a60d453dfb84be

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