Malicious PDF — malware analysis report

Static analysis result for SHA-256 19eb10a3434dd990…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 11:17:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: a1a60dfdeb29f7f38e67e10d61856250 SHA-1: f2104059d3b807e746c425765028d931be31f3f5 SHA-256: 19eb10a3434dd99063c764255c0245f0da285f96081ddf1c558aba334e937984
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs that are presented as game hacks or generators, a common lure for malicious content. The primary URL, http://netcdn.tw/app/406889139/oginject-co-game-hack, is flagged as a redirector for a game hack. The document body, though heavily obfuscated, contains references to similar lures and the authoring application suggests it was generated programmatically, likely to host these links. No scripts were extracted, but the presence of embedded URLs and the 'game hack redirect' heuristic strongly suggest a phishing or malware distribution attempt.

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/oginject-co-game-hack PDF link annotation
    • http://perpustakaan.ipts.ac.id/repository/how-to-win-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/como-usar-hacks-en-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-free-robux-with-consol_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-hack-into-any-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/hack-robar-cuentas-de-roblox-2021-akaka-pastebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/roblox-ultimate-driving-trucker-money-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-minecraft-in-roblox-and-more-naval-ships-minecraft_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-roblox-advertisement_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-get-side-server-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/fly-hack-roblox-v3rmillion_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/wwwfreerobuxgenoratercom_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/chromebook-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/how-to-hack-roblox-player_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ipts.ac.id/repository/rmc-free-roblox-aimbot-download_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_off0000309b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x309B 22780 bytes
SHA-256: a2288a64b31df1af8d13cbd6b1ddba11dc33beea2890c8c6bbd413fa0e457677
font_01_sfnt_off0000633f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 18020 bytes
SHA-256: b00a840f39707e8121b97fb48ad5fb2905e8ebddb5967a2ccaceb86904948ea4

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