Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fc385f4c67deab7…

MALICIOUS

PDF

46.3 KB Created: 2021-06-03 09:40:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a847dc39bd1fbc2a06a3f98dcd79746e SHA-1: a3277e16bedc318a97cf2074ea150b8e411ee81a SHA-256: 0fc385f4c67deab77a599107d58d83095601955c0233a701188564787efc57b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary URL identified is https://netcdn.online/app/431946152/free-roblox-accounts-2021-with-robux-game-hack. The document body and embedded heuristics confirm the intent to lure users to potentially harmful websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/431946152/free-roblox-accounts-2021-with-robux-game-hack In PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/i-robux_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-robux-images_GM431946152.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dunnagebags4u.com/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification_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
stream_004_off00005334.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5334 26576 bytes
SHA-256: c07a5aac136e0662e350f4891f87d0c9d1a74dfc350ae717286294dde8c4f318
font_01_sfnt_off00008fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEF 19076 bytes
SHA-256: a3899638bf51e335cbc40673d1471e0832e9a39f88469ef4ed0809ba61e6f618

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