Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d101774cc09ccd5…

MALICIOUS

PDF

42.2 KB Created: 2021-05-15 00:35:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b4d535095e419c1e7c950bd88f1393f6 SHA-1: 568b617404e8fe1b0adb04677a3d1db5ec32dd2c SHA-256: 1d101774cc09ccd5dcb9680540c3cf22635ad3398f18aee5c0f6e6cb30a78d33
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that promise free Robux or game hacks, indicating a social engineering lure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the ML classifier strongly suggest malicious intent. While no scripts were extracted, the embedded URLs are the primary indicators of a phishing or malware distribution attempt.

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/websites-that-give-free-robux-game-hack In PDF document text
    • http://per-bittner.de/images/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/impact-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://per-bittner.de/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • http://per-bittner.de/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://per-bittner.de/images/coin-master-free-spins-hack_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_off00004480.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4480 26136 bytes
SHA-256: 2125d14e0722e4986e6217f235de687c550d8c6f7e512da91f4872601babc11f
font_01_sfnt_off00008058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8058 18944 bytes
SHA-256: 78a0fcf68a5d31112d03f33f6a87e59a8dd4ec5e5d54fb5213929ff381de215f

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