Malicious PDF — malware analysis report

Static analysis result for SHA-256 f77b16c2b3b9908c…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 17:09:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 362aadaaf6f9d219198e061742fec8be SHA-1: 638ab7ae3af300f63a98df4c88bc2fe0648f33ba SHA-256: f77b16c2b3b9908c6a60ad62e493057386da953ec0b89dae4945210df53d38a6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a URL that promises a 'coin master hack'. The document body also contains this URL, reinforcing the lure. While no scripts were extracted, the PDF structure and the nature of the lure suggest an attempt to redirect the user to a potentially malicious site for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-mobile-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/google-how-do-you-get-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-robux-pastebin-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/gold-cards-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/supreme-roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-speed-hack-without-cheat-engine-dll_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/pubg-uc-deducted_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-key-login-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/hack-roblox-a-telecharger-gratuit-pour-jailbreak_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-codes-rob-the-bank-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-no2-copy_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-2021-android_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-inspect-element_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/get-free-robux-at_GM431946152.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_002_off00002dbc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DBC 22884 bytes
SHA-256: 258a286353866ea5e2bedc4e02aab8aeb4c7aecabe2f1651b08ff8f2b50b7bad
font_01_sfnt_off0000610d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610D 18236 bytes
SHA-256: 6a735436479ff0aab11f95a41c40e0b9404f26c9454ddfcce58982a18e600178

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