Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6debc7849036715…

MALICIOUS

PDF

34.7 KB Created: 2021-06-29 19:53:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 616e550d9bd7ed86fa0b69fce7cfb7c1 SHA-1: f8a4184fe8fbf454067402c04925911fab7a3ae5 SHA-256: d6debc78490367152c7d62c456f916a9237eff6f9e0f25ec8ed0c10d77c001a5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free in-game currency, directing users to a known malicious redirector. The document body contains multiple URLs pointing to other PDFs, likely serving as part of a phishing or scam campaign. The presence of embedded URLs and the malicious redirector link strongly suggest a phishing or social engineering attack.

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.co/app/431946152/what-games-work-with-cheat-engine-roblox-game-hack In PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-likes-on-tiktok-no-verification_GM835599320.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-hack-tool-exe_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-free-food-for-pet_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/is-minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/hacks-for-robux-no-human-verifycation_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/is-roblox-hacked_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/como-hackear-dragon-ball-rage-roblox_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/www-robux-com_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-roblox-boy-hair_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
font_00_sfnt_off00003083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3083 22076 bytes
SHA-256: 6f95793f8152c174cf7e9c51f5fe916f051d5516b3a96d532d7bdd00d75afcfd
font_01_sfnt_off00006173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6173 19504 bytes
SHA-256: d87b540b4f1e363de4995284a44577aa74ef7f2461783bb124d702218753e860

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