Malicious PDF — malware analysis report

Static analysis result for SHA-256 83ecf6ef30e84d04…

MALICIOUS

PDF

32.0 KB Created: 2021-06-03 06:17:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: bd7a3ec3b78ffe54b75532d5d8117074 SHA-1: fd1505cb5fa6f86812a28b70cc3153fa973187c6 SHA-256: 83ecf6ef30e84d04c50a32ed60cc1e5f0f192c899f32f11c1a342dd88862be75
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent link disguised as a 'free generator / game hack' which redirects to a known malicious domain. This lure is designed to trick users into visiting a site that likely hosts further malicious content or exploits. The document body and embedded URLs strongly suggest a phishing or scam attempt related to in-game currency.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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.
  • 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) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/406889139/coin-master-free-coins-and-spins-hack-game-hack In PDF document text
    • https://vierabyragazze.com/upload/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/pokemon-go-free-online-game_GM1094591345.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-tiktok-accounts-and-passwords_GM835599320.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
    • https://vierabyragazze.com/upload/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e0a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E0A 21870 bytes
SHA-256: 531124ece25fb336edb3ce5052d93a7ea4998dc5ef11fa70c9d6f9a659f09578

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