Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce12b13ddf35818…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 05:27:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fa4858ee5183e4cff8c2098ea7c12bd2 SHA-1: 6b0e54d2cefd2aee74259ed65f18354c77d601c9 SHA-256: 0ce12b13ddf35818da1c526b9deeda90b8bea705618c36c377af729288caed7f
160 Risk Score

Malware Insights

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

The PDF document contains multiple heuristics indicating it is a malicious redirector lure, specifically targeting users interested in game hacks and free currency. The primary URL, http://netcdn.tw/app/431946152/free-robux-no-verification-2021-android-game-hack, is flagged as malicious. While no scripts were extracted, the document's structure and embedded URLs strongly suggest an attempt to redirect users to potentially harmful content, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-no-verification-2021-android-game-hack In PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-free-spins-and-coins-for-iphone_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/roblox-speed-hack-feb_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-rewards_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/como-solucionar-el-problema-de-shut-down-roblox-al-hackear_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-a-headless-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/get-free-wings-roblox_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/daniel-newhard-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.vizyonproduction.com/application/uploads/assets/files/claim-free-spins-coin-master_GM406889139.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
font_00_sfnt_off000031ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31CE 22052 bytes
SHA-256: d3720d7a36500562c17418c323d9e27eb49cdba8f32d67b568eb14ee4656c142
font_01_sfnt_off0000628e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628E 19648 bytes
SHA-256: fddc38f60f29949e87a17df7f7945f6cf104ea1bd46a51d994ebbbbf43946b8f

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