Malicious PDF — malware analysis report

Static analysis result for SHA-256 70c1967b80ea5cac…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 04:55:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 033388bad0c418f4f694d63fc1d2c985 SHA-1: dee939cd6c8e927ea9c977491788f7aa4a93888e SHA-256: 70c1967b80ea5cacc4e0c77c1e377d308463a36ed0c9f2c9510973ce72295436
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure, specifically pointing to the URL https://netcdn.online/app/406889139/free-spin-generator-for-coin-master-game-hack. This URL, along with other embedded URLs, suggests a phishing or scam attempt to trick users into visiting a malicious site. The document body, though heavily obfuscated, contains references to game hacks and generators, reinforcing the lure. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/406889139/free-spin-generator-for-coin-master-game-hack PDF link annotation
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-website_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/tiktok-free-book-download_GM835599320.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-free-spins-no-survey_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/roblox-microsoft-rewards_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://digilib-bing.stkip-pgri-sumbar.ac.id/repository/collect-robux_GM431946152.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_004_off0000517b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x517B 24788 bytes
SHA-256: 856c1eba1da209325d1b99ce8784db6d28ea5889f046f70bcc87e608abccd0e7
font_01_sfnt_off00008a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A89 17884 bytes
SHA-256: 875ea20670cc53df10756da7fc56e77b8f1dde7185e9259fbb8a92495bb142d9

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