Malicious PDF — malware analysis report

Static analysis result for SHA-256 8053873a383034ab…

MALICIOUS

PDF

27.6 KB Created: 2021-05-17 07:03:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f1435d526609697183679edcef4c8e5 SHA-1: 8414fd80216e885aa0473bc46b61be46b588609a SHA-256: 8053873a383034ab3cb2537e9abf043beea54ef11025cd7678c14c6fa5cd2467
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The primary redirect URL is https://netcdn.xyz/app/406889139/coin-master-hack-spins-apk-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to lure users to potentially malicious websites. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • 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.
  • 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/406889139/coin-master-hack-spins-apk-game-hack In PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-gift-hack_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/krnl-download_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/hack-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.ppid.banglikab.go.id/assets/CKImages/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004aae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAE 12674 bytes
SHA-256: 2e3340879b9c4c6a11c677d47b400d56cd65c6f8c77969cfd031ac2859e1a35d

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