Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e369de35306efd…

MALICIOUS

PDF

53.7 KB Created: 2021-06-09 02:30:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 1b4b5343408b0b7765415d07d502d883 SHA-1: 3ee443341c4218826e42d8b44ccb21e698e78f87 SHA-256: 00e369de35306efdb983e5cf3cc68156f21e0133c486a1740479a910d6b90118
200 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free items, presented via a fake CAPTCHA. The primary malicious link identified is https://netcdn.tw/app/431946152/roblox-vehicle-simulator-money-hack-download-game-hack. While no scripts were extracted, the document's structure and embedded links strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9636

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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
  • 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.tw/app/431946152/roblox-vehicle-simulator-money-hack-download-game-hack In PDF document text
    • http://www.riverkennet.org/uploads/files/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/instant-robux_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/robux-withdraw_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/roblox-generator_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/robux-free-co_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/you-promised-my-son-free-robux_GM431946152.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
font_00_sfnt_off000051b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51B5 25708 bytes
SHA-256: f94e252cd1975da29b86270dbae839b0cd7786fa216dfcb19e47605df411ffcb
font_01_sfnt_off00008e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E06 8704 bytes
SHA-256: ddfd86c88a6b8304bc31eeb9f28c8110fac325cdacc87503bacf4ac741777490
font_02_sfnt_off0000aa71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAA71 19988 bytes
SHA-256: 50960b260865f12ea5da41162ac8502d2ad3f861b7fc8e0084ab36a98fae0b34

Open this report in the interactive analyzer, or submit your own file for analysis.