Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb34e8e902478590…

MALICIOUS

PDF

35.9 KB Created: 2021-06-25 22:54:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 03cc2e7bdc532f08cb3c236a852e05c6 SHA-1: c91ce933cde775206215e5c7c6da6ff669bf0bce SHA-256: bb34e8e90247859026c0b08e0e5dc98e897f720ef2d144ac17bfc46832aa4f76
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links and text that lure the user with promises of free game currency ('Robux') and game hacks. These links redirect to a known malicious domain, indicating a phishing or scam attempt. The document's structure and content strongly suggest it is designed to trick users into visiting a potentially harmful site.

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/robux-hack-little-obby-studios-game-hack In PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-real-true_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-balloon-pauldrons-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/aristois-minecraft-hack_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coin-master-hack-xyz-apk-download_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-join-players-that-arent-freind-hack_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-vip-servers-for-roblox-jailbreak-2021_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
font_00_sfnt_off000033b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B6 22664 bytes
SHA-256: d04f81998a2500331db118ef21fd8fb44d90f7a717b279a0b2d7f245fb8804c1
font_01_sfnt_off0000663a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663A 19372 bytes
SHA-256: 4ea4fe99bd1b6e44b513180ea8ab9c056b8bd6ddec3f4c3baa845e15e7e703e1

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