Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c381fe3e95a913…

MALICIOUS

PDF

33.7 KB Created: 2021-06-19 18:46:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2697bb5293c1a74e238007a5731a6b2f SHA-1: dcb7cd208f59b7a35924f95e64556ecef0954484 SHA-256: e9c381fe3e95a913e47c0c516a917e839cdb7c93e336bb81ad51ce44df6948e2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, which is designed to lure users into clicking on game hack or generator lures. The primary malicious link is http://netcdn.co/app/431946152/how-to-get-free-wings-in-roblox-2021-game-hack, which is part of a campaign distributing links to potentially harmful content. The ML classifier also strongly flagged this PDF as malicious.

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/how-to-get-free-wings-in-roblox-2021-game-hack In PDF document text
    • http://kermas.eu/images/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-roblox-accounts-with-builders-club_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-earn-free-pokeballs-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • http://kermas.eu/images/roblox-hack-unlimited-money-pc_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/hack-mod-of-roblox_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_off00002c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C25 22000 bytes
SHA-256: e4a4e5d159c369da207a7567ff05ddb05d3dba954945c3d8f4419527b1a4a666
font_01_sfnt_off00005c85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C85 19636 bytes
SHA-256: 2544e050481e1bbb19334a92d891fbcf8689b97560072ffc3e6caa82d6c594b4

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