Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e695048750f913b…

MALICIOUS

PDF

9.4 KB Created: 2021-07-04 08:53:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1e00e47bef86cefa89949b0b515c0388 SHA-1: 170f953d5a1216889e9de2a6830332239b71651f SHA-256: 7e695048750f913b57cc4359bb172022285ba8a7c4210a6a28d4fb58c4998197
172 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting free game hacks and items. The heuristic firings indicate that these links are associated with known malicious redirectors and game hack lures. The document body, though partially corrupted, contains references to these lures and URLs, reinforcing the phishing and redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9867

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 http://netcdn.tw/app/431946152/free-roblox-com-game-hack In PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/moonactive-coin-master_GM406889139.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/robux-hacks-march-2021_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/pubg-uc-visa-card_GM1330123889.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/roblox-free-robux-codes-card_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/free-roblox-lua-scripts_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.callong.cn/uploaded_files/userfiles/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text

Related samples 8

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