Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0e95fb1bf0db18…

MALICIOUS

PDF

42.8 KB Created: 2021-05-14 23:18:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7da0c4ed5355a3614e0d840659181f63 SHA-1: 7c68e39cacecc12e4884c8124c8b27d4ab8f1db0 SHA-256: 2b0e95fb1bf0db18d59f6a556dac8811cf153c65870e652988ad0ff450a52137
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'game hacks' and 'free robux' to entice users. The document body and embedded URLs strongly suggest a phishing or malware distribution lure, likely leading to a second-stage download. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing or downloader attack.

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/how-do-u-hack-roblox-game-hack In PDF document text
    • http://ff-klaffenbach.de/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/static-moonactive_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/how-to-earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/coin-and-spin-link_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://ff-klaffenbach.de/images/how-to-play-minecraft-for-free_GM479516143.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_off00004797.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4797 26560 bytes
SHA-256: 7d53c2ccb5fe3e26072ccaae95c2d6316415fd4f8633a7e7cbf2d0c6f9703d36
font_01_sfnt_off00008399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8399 18700 bytes
SHA-256: 24715886d6b8435fb8a33d258b866203ee2974827a311e3ab6dcb36e4a196b9f

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