Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ec5fb3503266241…

MALICIOUS

PDF

35.2 KB Created: 2021-07-08 14:24:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d5cebc1d4bc2d4fa0d098535895ae7cb SHA-1: c89e22a8387484ae493dedb76247f7400b267694 SHA-256: 8ec5fb3503266241975fbfa69cb2972a8a9a968537d79e531314e0df509bcb7d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency to entice users to click on embedded links. The primary link directs to a known malicious redirector infrastructure, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URLs indicate a social engineering tactic to lead 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/406889139/free-coins-coin-master-spins-game-hack In PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-2-get-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/developer-tools-hack-roblox_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/robux-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-the-crazy-elevator-free-toilet-dhlc_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/asshurt-roblox-multitool-free_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/100-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/robux-fun-hack_GM431946152.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_002_off00003187.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3187 23628 bytes
SHA-256: fa0be83ee7a6288b11b53cf6e58de51c57294fb3cf5768a15db19b899b7b83e8
font_01_sfnt_off00006754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6754 18176 bytes
SHA-256: 9c216cc6aa1e94c18ff26070eb99056dac407022fd31ef3f29cf2ac34e799f34

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