Malicious PDF — malware analysis report

Static analysis result for SHA-256 06da4db0a5dc16ed…

MALICIOUS

PDF

44.6 KB Created: 2021-06-03 22:05:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 36c7f270bae19e5280a6a027530bd3e4 SHA-1: 09417d18c78d01b290d029a86b402348ac417a59 SHA-256: 06da4db0a5dc16edd69bcd96cb7b92419f0d76f3d74c7f68c4873fc81ac49892
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to a known malicious redirector infrastructure, disguised with a "Coin Master Hack" lure. The ML classifier strongly indicated maliciousness, and the presence of embedded URLs suggests a social engineering attempt to drive users to potentially harmful content. The document's structure and embedded links align with a phishing or malware distribution tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-hack-no-human-verification-game-hack In PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/mcpe-master-hack-coin-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/oprewards-com-earn_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-get-free-premium-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
stream_004_off0000523f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x523F 24868 bytes
SHA-256: ba7e7ed82b3f7be30266e2cb54d5911ae8cb3c4d5cf4cdb3c15263d8a4885cd1
font_01_sfnt_off00008bc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BC1 18248 bytes
SHA-256: b53d611e96a32094425b068729023046bb1db9f19d10500fe1599e8fd30759af

Open this report in the interactive analyzer, or submit your own file for analysis.