Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbb34b9129ab57b2…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 07:57:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 29e86f3400fb09e9c6a1dc119e72d24d SHA-1: c83e6e39f0989556363f9f8eed02473b489c45af SHA-256: fbb34b9129ab57b2f4ebd71137a4d66a9e95dee2db509f4015ed7ad054f00e1f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with the promise of game hacks. The primary redirector URL is http://netcdn.tw/app/406889139/mcpe-master-hack-coins-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector chain designed to lead users to potentially harmful content. The presence of a visual download button further supports the lure.

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.tw/app/406889139/mcpe-master-hack-coins-game-hack In PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-card-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hacking-pesonn-roblox-script_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-on-chrome_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-speed-race-hacks_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/t-shirt-roblox-free-shipping_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/go-thru-walls-roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-hack-script-download_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-diamonds-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-breaking-point-fullbright-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/robux-only_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-a-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-backpack-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-mod-menu-apk_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
font_00_sfnt_off0000319c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319C 22640 bytes
SHA-256: 1247dba10e01e4176bf42b7f055df216970a0c6bb866e8227cc07cecb121fc38
font_01_sfnt_off0000644e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644E 18180 bytes
SHA-256: 92faf3057dda85b96eed63f8c940eae00c44c914698dadd2c1d3c54ade9dde20

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