Malicious PDF — malware analysis report

Static analysis result for SHA-256 66771bab19030626…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 22:12:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ed5b15e383d73b66dd97db36f3750ca1 SHA-1: 6ddf3320ff6b2018bddac554332f17e4cb095258 SHA-256: 66771bab190306263a2e145880cb4a06e53559eaaecd4f27190684e56d98a4a2
180 Risk Score

Malware Insights

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

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The document body and heuristics indicate a lure for downloading potentially unwanted or malicious software. The primary IOC is the redirector URL which is likely the first stage of a download or exploit chain.

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.
  • 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
  • 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/479516143/minecraft-apk-free-download-game-hack In PDF document text
    • http://peche-madagascar.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/roblox-re_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://peche-madagascar.com/images/my-robux_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://peche-madagascar.com/images/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • https://playhack.in/minecraftIn 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_off00004928.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4928 25580 bytes
SHA-256: 1318df37926b9645e44aa0b55e8984eda077c43aaee989745af1e7a0e608d5f4
font_01_sfnt_off000082f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F8 18636 bytes
SHA-256: 460052af6c2621f53863fdd0e184641c8149664fef9b3bc68df6f3fcb4cff320

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