Malicious PDF — malware analysis report

Static analysis result for SHA-256 163147b8078513f4…

MALICIOUS

PDF

49.1 KB Created: 2021-06-03 03:58:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 277714497e414e3184663c986b201655 SHA-1: 098cfbdd5ad1de8512f5ac7b0c0d6d2b977fbe5e SHA-256: 163147b8078513f4ec1c159f8b0ee5aba3925c805f57f8bf253136762f8aca5c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a known malicious infrastructure, specifically advertising 'game hacks' and 'promo codes' as a lure. The ML classifier also flagged this document with high confidence. The primary malicious activity observed is the redirection to a URL designed to deceive users, likely for financial scams or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/431946152/roblox-promo-codes-generator-no-human-verification-game-hack In PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-weird_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-converter_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005228.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5228 27624 bytes
SHA-256: 324ec8725d2bb385eed5461a309412e81eb7242da0f08c22213666606760969b
font_01_sfnt_off00009102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9102 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009ab4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB4 19100 bytes
SHA-256: da1745847f0d76ea82434fee3d569844ba056c0d901119001214af0940d395e7

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