Malicious PDF — malware analysis report

Static analysis result for SHA-256 3041e39ed1473f53…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 02:40:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d8ceec9350d0eff959236db26cd9652d SHA-1: aa300fc59c2eaf3baf0effb26d4bcca36e8a539c SHA-256: 3041e39ed1473f53b6e02f4b5b409a68ce158e2acafac31cda66bf3b7259fe68
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that lead to a malicious redirector infrastructure, specifically advertising 'free generators' for games like Roblox and Coin Master. The ML classifier strongly indicated maliciousness, and the presence of numerous links to known redirectors confirms a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded URLs suggest it's designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/hack-cuentas-y-nombres-gratis-en-roblox-pastebin-game-hack In PDF document text
    • http://astdubai.co/userfiles/files/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/guest-roblox-faced-hacked_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/coin-master-hack-spin-ios_GM406889139.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://astdubai.co/userfiles/files/wwwfreerobuxroblox_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_off00002f0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F0A 22768 bytes
SHA-256: ec57ba4573c205f030eb6d6a5fce3bcec48b93d572d3e0ab844192934ff2adf9
font_01_sfnt_off00006202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6202 19596 bytes
SHA-256: 7ab9f218c08a6542536c9cc9c6313160d5360ea07020b92869c5661fced77cef

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