Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ba94cff3f34c3ba…

MALICIOUS

PDF

35.8 KB Created: 2021-06-25 21:07:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 06e04ab6f70bfd89b42c82ec07dfda80 SHA-1: 7085f43317b8d03a9dcebc9bb3a5e3a0d5d9be0e SHA-256: 3ba94cff3f34c3ba910974da46a7ebb829dd9312eb1675b7288f91706e8b2578
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, disguised as offers for free Robux or game hacks. The heuristic firings indicate that the PDF is designed to lure users to these malicious URLs, which likely serve as a gateway to further malicious content or exploits. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest a phishing or social engineering attack.

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/claim-free-robux-without-human-verification-game-hack In PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/hacks-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-maps-free-download_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-prison-life-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/optifine-mcpe_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/get-free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/tiktok-free-package-dialog_GM835599320.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003149.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3149 23200 bytes
SHA-256: 836c0310737bf8677e1bef35e736ef9e9c3c838eb89f4151334f43eb20fe3a90
font_01_sfnt_off00006516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6516 19772 bytes
SHA-256: b9864bfbc1a5ef652a77fc7b0e63fae51a56e8a62a13b2508c1e7041de0d4eca

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