Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f27a42bc328bdf…

MALICIOUS

PDF

42.2 KB Created: 2021-05-12 19:03:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 495c100675ea704a3d3c0f2ca975a023 SHA-1: 3ee2a219c67ecbf5644fa7819f8493db522fb14c SHA-256: c2f27a42bc328bdf22a9f3e761594efe358cc329190cf4eb99875008f9c2d9a8
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links to external websites, including a known malicious redirector, disguised as offers for game hacks and currency. The presence of a 'MFA lure' heuristic suggests the document may also attempt to harvest user credentials or session tokens. The primary attack pattern involves tricking users into clicking malicious links by leveraging popular game-related lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/431946152/download-apps-for-robux-game-hack In PDF document text
    • https://adirp.id/upload_data/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/minecraft-education-free_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/app-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-hack-tool-india_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-free-coins_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_003_off000048e9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E9 24248 bytes
SHA-256: 3df7656c49f4cb963c07376192b13c78ce9db9b5ac5592ce3227ec67c8fe4337
font_01_sfnt_off0000806c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x806C 18996 bytes
SHA-256: ea235c61f7ee6ff97cb8e2e4b8381115f9ce59fc272e8f2939e83a9622de1179

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