Malicious PDF — malware analysis report

Static analysis result for SHA-256 629e9db175a500d9…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 12:56:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 41b234182f6fccb2b80fa0eb8e71f826 SHA-1: 5f0541994dbb9a132f5367c75925275371dfcccf SHA-256: 629e9db175a500d9e65d0e8d274e94be9ed879d7d0d02ce3603c1a100be86b1e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including a critical one pointing to known malicious redirector infrastructure at `https://netcdn.online/app/406889139/coin-master-hack-spins-free-game-hack`. The document body and heuristics indicate a lure for a "Coin Master Hack" to entice users to click these links. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for JavaScript execution or redirection to malicious sites, aligning with common phishing and malware distribution tactics.

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-spins-free-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-hack-ios-download-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/can-i-have-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-hack-pc-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-free-items_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/minecraft-pe-free_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000511a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x511A 25360 bytes
SHA-256: 7763de02fc4a4e28252c2812affdd064c3677d9141d75649ea171701b3bdef17
font_01_sfnt_off000089ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89EA 18056 bytes
SHA-256: 3a48050c63aabf25a2d2ed42cf8c513b78da245fbdfe2ff32403c31c4228eff7

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