Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b9a9544fb93256f…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 19:44:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b205aac4f330d3af7042a07334043711 SHA-1: bc28fc718dc5544fbb5b0370c5daa04d1e545e1b SHA-256: 0b9a9544fb93256f950e1ceca9ce91d3e0aad22abe0c72f0ca67520a451dfa2f
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 pointing to 'http://netcdn.tw/app/406889139/moonactive-coin-master-game-hack'. This suggests the document is designed to trick users into visiting potentially harmful websites, likely for phishing or malware distribution. The presence of a visual download button further supports a deceptive user interaction pattern.

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/moonactive-coin-master-game-hack In PDF document text
    • http://library.darmaagung.ac.id//repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-home_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/download-roblox-cheat-tool_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/roblox-ultimate-driving-money-cheat_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/roblox-weird_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/pubg-uc-carding-method-2021_GM1330123889.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/get-free-robux-skin-tone_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/coin-master-hack-online-2021_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/free-roblox-wings_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id/repository/roblox-free-no-need-to-download_GM431946152.pdfIn PDF document text
    • http://library.darmaagung.ac.id//repository/minecraft-on-computer-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_002_off00003082.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3082 23008 bytes
SHA-256: 066be8c23f5446e4fba3411d72a99c2d885dbf4df6ea977cfa6eafa8301f4780
font_01_sfnt_off00006427.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6427 17948 bytes
SHA-256: 97859170db8728f6d44133b3bf898116883bb6069593925494fa44c66d83b8d9

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