Malicious PDF — malware analysis report

Static analysis result for SHA-256 fde7882539bf34d1…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 19:26:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: d03897e590b8217a03ac284cdf213a7c SHA-1: 9ffc62ea9fe23ce8d7f42866a0c3b024ee63cc39 SHA-256: fde7882539bf34d1b21373310ef133a824050521700b97af8279d6caa10c57e2
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure to trick users into visiting malicious redirectors and downloading further potentially malicious content. The document body and heuristics indicate a strong focus on exploiting interest in games like Roblox and Minecraft for fraudulent purposes. The embedded URLs are the primary indicators of malicious intent, leading to known malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://netcdn.tw/app/431946152/how-to-hack-roblox-accounts-on-phone-game-hack In PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/free-tiktok-followers-no-human-verification-or-survey_GM835599320.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-to-get-a-free-umbrella-in-camping-roblox_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/coins-master_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/free-uncopylocked-roblox-games-meganz_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/tiktok-free-wifi_GM835599320.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/how-hack-to-roblox_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/coin-master-hack-tool-no-human-verification_GM406889139.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/hack-de-cuenta1-roblox_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/earn-free-robux-by-completing-offers-and-surveys_GM431946152.pdfIn PDF document text
    • http://anisio.eti.br/ckfinder/userfiles/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3152 22820 bytes
SHA-256: 170a03637fe0e7413dd53cb205b6eb67b1aace808b70aa3a7ac7dfb4e48a4b3e
font_01_sfnt_off000063a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A7 19384 bytes
SHA-256: 084794c69c3a15ed1330993b6e362ce24a67b8c731d0da79d42958a9f82904df

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