Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7e008ed6bef6953…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 21:47:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 30f2863c760ff22da8007d1d6715f51a SHA-1: 2098f14a0b6706b7adc6de26ab3d9a2210486d7b SHA-256: b7e008ed6bef6953eaec6fb3918477e3744338e8c3f90f84c9e29da46d906f19
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and sites offering game-related cheats or currency. The document body explicitly mentions 'Get Free Spins On Coin Master' and includes URLs that align with this lure. The presence of these links and the heuristic firings strongly suggest a phishing or scam attempt designed to lead users to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • 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 http://netcdn.tw/app/406889139/get-free-spins-on-coin-master-game-hack In PDF document text
    • http://fishboat.hr/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://fishboat.hr/files/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://fishboat.hr/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • https://www.fishboat.hr/files/free-expire-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/www-robux_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/free-promo-code-roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/roblox-radio-script-pastebin-hack_GM431946152.pdfIn PDF document text
    • http://fishboat.hr/files/free-rixty-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://fishboat.hr/files/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/minecraft-switch-free_GM479516143.pdfIn PDF document text
    • https://www.fishboat.hr/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://fishboat.hr/files/new-roblox-hack-zombie-rush_GM431946152.pdfIn PDF document text
    • https://www.fishboat.hr/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.fishboat.hr/files/get-free-robux-no-verification_GM431946152.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_002_off00003010.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3010 23096 bytes
SHA-256: d46b667a56b90ae5e7efbffa6b6c52d9234f69d5372feabd2a20f7b23de23b47
font_01_sfnt_off00006441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6441 18176 bytes
SHA-256: c16df4cb6866c2276686c5aaa4a0cb78e61d49506a44cfdb7663fe8f5aebf96b

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