Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f0eecd0b3e79cf1…

MALICIOUS

PDF

46.0 KB Created: 2021-06-07 15:23:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bd98834be9471b2a5fa0d071f14d886c SHA-1: 8e85d8c337958fb1001ee02077be3c923050a0e3 SHA-256: 4f0eecd0b3e79cf1b7f550bd4f703ce60b5c22e1e52e2accf133a5f1ffd9115e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The primary lure is a link to 'free-shoulder-pet-roblox-game-hack'. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or redirection attempt, likely to deliver a secondary payload or lead users to a scam website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/free-shoulder-pet-roblox-game-hack In PDF document text
    • http://altc.de/images/how-to-do-money-hack-roblox_GM431946152.pdfIn PDF document text
    • http://altc.de/images/roblox-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://altc.de/images/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://altc.de/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://altc.de/images/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://altc.de/images/free-tiktok-fans-app_GM835599320.pdfIn PDF document text
    • http://altc.de/images/coin-master-cheat-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://altc.de/images/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://altc.de/images/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://altc.de/images/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://altc.de/images/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://altc.de/images/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://altc.de/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://altc.de/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://altc.de/images/how-to-hack-roblox-2021-games_GM431946152.pdfIn PDF document text
    • http://altc.de/images/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://altc.de/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://altc.de/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://altc.de/images/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://altc.de/images/coin-master-free-pet-food_GM406889139.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_off00004efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4EFB 28240 bytes
SHA-256: 236c601904d97ce0fbf6349ca543593bdf3a4acf8a318c45a4ab462d292327c6
font_01_sfnt_off00009014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9014 18688 bytes
SHA-256: 8460df567bcadcf746f33d5344cfb0373cde90891d8c4aa9387f7ea3f71cb865

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