Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7edb06437b22b00…

MALICIOUS

PDF

44.6 KB Created: 2021-06-10 11:26:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 420566d97540cdc0321827e6c023ebdb SHA-1: 70e61cab43a271cdcbb981884d57d0414a393584 SHA-256: d7edb06437b22b00ae93af2303257bf78dc32b44400b2b7104dad494a2f978e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a 'free game hack' which redirects to known malicious infrastructure. The document body and embedded links are designed to trick the user into clicking through to a potentially harmful site. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious redirector lure, likely intended to deliver a second-stage payload.

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.tw/app/431946152/become-roblox-admin-free-game-hack In PDF document text
    • http://alroglobal.com/images/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/pokemon-go-free-walk-android_GM1094591345.pdfIn PDF document text
    • http://alroglobal.com/images/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/roblox-hacker-arrested_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/how-to-get-free-robux-2021-working_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/roblox-counter-blox-spin-bot-hack_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004d67.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D67 27244 bytes
SHA-256: cf35a69f8e49d9ac7df3b2ef965353760db736ec6990a5ba9d7c930a0565b9d8
font_01_sfnt_off00008b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5F 18504 bytes
SHA-256: fe3d0297dc6367e2f33fde8954b116c5dfb76da1178ed4ede066510dc70b1fe8

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