Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8cd8b9bce821d5d…

MALICIOUS

PDF

34.3 KB Created: 2021-06-27 07:18:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7912e88799472cb479a9f297db416847 SHA-1: 8091846d85a1229137167d94c566c9388a27ab1b SHA-256: d8cd8b9bce821d5df56aeaeb0fc568943489a7b6f2b719e3f06f934ac5b170a1
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and lures related to game hacks and cheats, specifically mentioning Roblox and Coin Master. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-glasses-code-to-get-for-free-game-hack, which is likely a redirector to a malicious download or phishing page. The presence of these lures and the ML classification strongly indicate a malicious intent to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/roblox-glasses-code-to-get-for-free-game-hack PDF link annotation
    • https://opac.itp.ac.id/repository/skater-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/pokemon-go-free-coins-hack-2021_GM1094591345.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-marketplace-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coolest-free-roblox-characters_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-free-draw-uncopylocked_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hacks-para-roblox-como-traspasar-paredes_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/bad-bussiness-roblox-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-legally_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-exploit-kits-for-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-roblox-accounts-on-a-phone_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-admin-panel-free-robux_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_off00002fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE0 22240 bytes
SHA-256: 0bf99ff8b6b3b7fe47362e457f71dd3c60402099b311181c37ffe4a3b34f1de4
font_01_sfnt_off00006102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6102 18928 bytes
SHA-256: 627ebf45b9a391532aa00f36853c44c3190f274a777af5579813b9c8a1e1ca2d

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