Malicious PDF — malware analysis report

Static analysis result for SHA-256 4612073d77853ba9…

MALICIOUS

PDF

34.9 KB Created: 2021-06-28 05:30:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e58b3f561660ffbac4b53d1047ee0311 SHA-1: c6997b5a943ad138fbe59f6472ff752f9dcfb03a SHA-256: 4612073d77853ba9d082124bdb9ae0a22aac607aacb38e2123f7b923e5cb3bd4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to known malicious redirector infrastructure. The document body and embedded links suggest a lure for free game currency or hacks, likely intended to lead users to a phishing or malware download site. No scripts were extracted from this sample, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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.co/app/431946152/real-free-robux-generator-no-human-verification-game-hack In PDF document text
    • https://www.wannon.tw/upload/files/roblox-20-left-arm-free_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/fly-hack-download-for-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/optifine-mcpe_GM479516143.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/john-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/youtube-hack-any-roblox-account-no-loading_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/free-gamepasses-all-roblox_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/codes-for-roblox-weight-lifting-simulator-3-hack_GM431946152.pdfIn PDF document text
    • https://www.wannon.tw/upload/files/coin-master-50-spin-link_GM406889139.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
font_00_sfnt_off00002fb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB6 22764 bytes
SHA-256: 0071793b3649c601088282c55e810d4d865c893b6aebc0091f4e2b475ea15ab7
font_01_sfnt_off0000629b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x629B 19408 bytes
SHA-256: 22c813dc84f2ccbd114f7696d6ab7c7d91ed553264b117c4a7d8b29d7c40d3f1

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