Malicious PDF — malware analysis report

Static analysis result for SHA-256 a68c5aee85a093aa…

MALICIOUS

PDF

47.2 KB Created: 2021-05-16 23:04:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 52cbcd3cb2a3cf8a31bc44dd602ca685 SHA-1: 9647092fb1a2105f03f986196c690e0530d35791 SHA-256: a68c5aee85a093aa06eb381a91cc646485db0de443236b90498a83aeb80aa711
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to malicious redirectors, specifically advertising "free generators" and "hacks" for games like Roblox and Coin Master. The primary redirector URL is https://netcdn.xyz/app/431946152/roblox-tracker-game-hack, which is designed to lure users into clicking through to potentially harmful content. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or scam attempt, likely serving as a lure for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • 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.
  • 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.xyz/app/431946152/roblox-tracker-game-hack In PDF document text
    • http://acp-institut.fr/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/how-many-levels-in-coin-master_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://acp-institut.fr/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://acp-institut.fr/images/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/roblox-devil_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/rbxoffers-com-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
stream_003_off00004e08.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E08 25792 bytes
SHA-256: 69002e1f422584c7f2e8b3839060e55683d48eb1f791205b2b1f8706b5c9324a
font_01_sfnt_off000088dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DC 3864 bytes
SHA-256: a2d209cda06e636f9c3184132d8de5fe344dab81c42171fcf0d4bae51454a63f
font_02_sfnt_off00009651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9651 18184 bytes
SHA-256: 72f8522d23e1124dd8ed7fdd7308c58d02d03d2ede9b00fcb85fd7d8fd1c97df

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