Malicious PDF — malware analysis report

Static analysis result for SHA-256 119139bd4d55fac8…

MALICIOUS

PDF

45.4 KB Created: 2021-05-11 05:05:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f23bc947f56be0bf547ad0c4eb0fde6b SHA-1: c862b9b06fa149f8f3cac95713edc17dc763614d SHA-256: 119139bd4d55fac8c04b782f3affaee53638e186d39459130a2e944c4dc4b392
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, disguised as a "game hack" generator. The document body and embedded links suggest a lure for free in-game currency or items, likely leading to a phishing or malware download site. No scripts were extracted, but the presence of multiple malicious links indicates a high likelihood of a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.xyz/app/406889139/coin-master-cards-hack-2021-game-hack In PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/114-hacks_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.pn-raha.go.id/repository/roblox-hack-ga_GM431946152.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_003_off00004a08.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A08 25652 bytes
SHA-256: 74c49487d3873c0d1c8bd9b765e81ddf718c84b6c2857f5f66b88c92238998cb
font_01_sfnt_off00008515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8515 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008eb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EB8 18292 bytes
SHA-256: 56ed892f9c960ec28c91726eeb440a92294fcef820bc23b96874e10d7a9d3574

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