Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cdf7f27169b6354…

MALICIOUS

PDF

35.8 KB Created: 2021-06-24 07:01:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ee8b59ee25da3a805dc7fee8bd5aef48 SHA-1: 7689841db28e7ae687439a02bd6109efb6f70600 SHA-256: 8cdf7f27169b635412e2e622fa98092db97e112c6da370cb358b0a52bc8d7e61
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a malicious redirector link disguised as a 'game hack' lure, aiming to trick users into clicking it. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content or download further malware. No scripts were extracted, but the document's structure and embedded links 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/479516143/how-to-get-minecraft-bedrock-edition-on-pc-for-free-game-hack In PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/robux-game_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-minecraft-windows-10-with-java_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/minecraft-packs-free_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/minecraft-free-download-mac-full-version_GM479516143.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://yontemakademi.com.tr/public/uploads/files/coin-master-rewards-app_GM406889139.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_off000035d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35D2 22552 bytes
SHA-256: 8f551102426d62dc6c97ef448244e49da6185daa6cedf3348d75308cdb22c821
font_01_sfnt_off000067e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67E2 18876 bytes
SHA-256: 94c921ff1c0d610b484f208a6a4db1dab69e1648dc92a7c5b63bd0f931d21dd3

Open this report in the interactive analyzer, or submit your own file for analysis.