Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f1b2e65adb7fe28…

MALICIOUS

PDF

40.6 KB Created: 2021-05-10 16:20:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f25a05d998daf462d03b769d7a547815 SHA-1: d52b9ef4637d47bb1d1cfe93bae3a83ae73daa8d SHA-256: 3f1b2e65adb7fe28313cc827a514ff81d178c7aba59e586833ccafd9cbca5761
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, specifically advertising 'free exploits for Roblox'. The document body includes a call to action to 'CLICK HERE TO ACCESS ROBLOX GENERATOR', strongly suggesting a phishing or scam attempt. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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/free-exploits-for-roblox-game-hack In PDF document text
    • http://alexandergroep.nl/images/weird-roblox_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://alexandergroep.nl/images/coin-master-hack-spins-ios_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://alexandergroep.nl/images/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
    • http://alexandergroep.nl/images/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://alexandergroep.nl/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://alexandergroep.nl/images/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://alexandergroep.nl/images/coin-master-free-spins-only_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
stream_003_off00003e50.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3E50 27316 bytes
SHA-256: 5f2c8f31331bcccb48557c20306902ae2fbe19addcebd72e38d51f10db07483f
font_01_sfnt_off00007c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C4F 18348 bytes
SHA-256: 3eb1125b3232d06dc8927376afe50af41f8c0a9e23720a9da0c3984e77695e12

Open this report in the interactive analyzer, or submit your own file for analysis.