Malicious PDF — malware analysis report

Static analysis result for SHA-256 f77a95f269ad86ba…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 20:51:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4c6730c6489e49ff65cac3165f766355 SHA-1: 6a881a2909d81462ea8d6179590d4a351a465f37 SHA-256: f77a95f269ad86ba118fa198a4fcfc11a6f2bc070c9cfba58400d16d6f667a5c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating malicious redirector links, specifically pointing to a lure for game hacks and generators. The embedded URL 'http://netcdn.tw/app/479516143/minecraft-clipart-free-game-hack' is identified as a known malicious redirector. The document body and PDF facts confirm the presence of these links, suggesting an attempt to redirect users to potentially harmful content.

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/479516143/minecraft-clipart-free-game-hack In PDF document text
    • https://www.ma-plast.hr/files/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/robux-adder-hack-download_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-studio-free_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-get-free-robux-2021-inspect_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/pokemon-go-free-candy_GM1094591345.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-no-verification-or-offer_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-stylish-animation-free_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-domnis-rex-and-messor-roblox-youtube_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/roblox-dragon-adventures-cheat_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/create-clothing-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coins-master-hack_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_off000033a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33A3 22624 bytes
SHA-256: 6e71add4e40ab4aaa3c8aef541948a294c13769656b8df1f7726cef495fe3906
font_01_sfnt_off00006520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6520 18108 bytes
SHA-256: 2474ffc82d65bd1f3a3bcd80ab595ba54cd6162201fea4af08543d46b506f2eb

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