Malicious PDF — malware analysis report

Static analysis result for SHA-256 040d27bfeeda4c03…

MALICIOUS

PDF

41.2 KB Created: 2021-05-14 06:05:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 080dab0ce43a48a1399176914f2de483 SHA-1: 4893ac6b65aa212e40acf7f78146e4ba13619e1e SHA-256: 040d27bfeeda4c0374d109ce212aaeba80631abc419a2cc8f3b805a4d545cbdc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirector lure, pointing to a specific URL. The document body, though heavily obfuscated, also contains this URL. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/free-coin-master-generator-game-hack In PDF document text
    • https://www.imagevideo.info/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-spin-link-today_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/dailyrobux_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_003_off000048a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A0 24456 bytes
SHA-256: 02eb8a958ae2ecb566122ab276b8d2bc0dfb5b5b63f64801b824cf3910be7507
font_01_sfnt_off00008049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8049 17712 bytes
SHA-256: 257a612313d270105d122f3198241e5dbbd2f563e6a420601a0e3220659a58bd

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