Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3b3ab4e8249c0f1…

MALICIOUS

PDF

43.5 KB Created: 2021-05-12 05:32:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 22fe7588bcfccaeca604310c53eb7789 SHA-1: 10992feea76d1f1115a6abf34f61501a7067b8bf SHA-256: f3b3ab4e8249c0f168193e11880363240286695c330e41d1d9af37ab1eeefcc2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure, specifically advertising 'free generators' and 'game hacks' to lure users. The primary redirect URL, https://netcdn.xyz/app/479516143/minecraft-free-online-unblocked-game-hack, is flagged as malicious. While no scripts were extracted, the document's structure and embedded links strongly suggest a phishing or social engineering attack aimed at driving traffic to malicious sites. The presence of a visual download button further supports this social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/minecraft-free-online-unblocked-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/2021-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-daily-free-spins-25_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/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_off00004b0c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0C 26360 bytes
SHA-256: b3e18014cf0904aa1eeb294e9fc5ebc6e0886a5e29a7168b1f93527f6fa01bb4
font_01_sfnt_off00008728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8728 18472 bytes
SHA-256: abb7a985c0805b7a76c0c4535c5556453d230e477aa0a832b20693e75b2d3697

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