Malicious PDF — malware analysis report

Static analysis result for SHA-256 35e807f01d4f8d43…

MALICIOUS

PDF

38.0 KB Created: 2021-05-22 05:09:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b227b1d11237d636e6bcfc42f8f493a9 SHA-1: 1ee1c062d687a6624711bf78654cc3ef09ad2e8e SHA-256: 35e807f01d4f8d439dcbf94b1722ddf74c8443bcccb46ea92dff3354460a97d0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting "free Robux" and "game hacks" as a lure. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest a phishing or scam attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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-robux-roblox-promo-codes-game-hack In PDF document text
    • http://enjoybabelisland.com/images/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://enjoybabelisland.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://enjoybabelisland.com/images/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://enjoybabelisland.com/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://enjoybabelisland.com/images/coin-master-hack-apk-link_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
font_00_sfnt_off00003524.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3524 27636 bytes
SHA-256: 42da6383305da5fb91e3f6c0fcd3f06dde175960f12c40f31965815d740928db
font_01_sfnt_off00007242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7242 18676 bytes
SHA-256: 9297a3cb5fba7ca587652f513aa1222127deb04773b45a9c0f6482a9c793d56f

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