Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fd09548eb4a9d59…

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 11:32:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f807e5732ff6be45b11a6cb6bb781fb3 SHA-1: 10213fd45f12930b64b681ab713733dbac23f53b SHA-256: 3fd09548eb4a9d590f3956204aa79ad51b9964d920cf9a27fae31027ca114b2c
160 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links and a visible call-to-action button, all directing users to websites that are flagged as malicious redirectors. The lure content suggests a focus on "free game hacks" or "generators", a common tactic for phishing or malware distribution. The primary malicious URL identified is https://netcdn.xyz/app/431946152/is-it-possible-to-get-free-robux-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/is-it-possible-to-get-free-robux-game-hack In PDF document text
    • http://apx-centre.ru/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://apx-centre.ru/images/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/free-spins-coin-master-2021-app_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://apx-centre.ru/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://apx-centre.ru/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://apx-centre.ru/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4839 25036 bytes
SHA-256: 466dec51275e845d1778c5e6e4f3ac28492b886a407713a898c465f8dba9c9cc
font_01_sfnt_off000081ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BA 18464 bytes
SHA-256: 524b785793646940a6547919a11f6df6f4967036cf63710b5a4934c88ca16ae7

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