Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0cd81065d61b11c…

MALICIOUS

PDF

41.8 KB Created: 2021-05-13 13:21:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5690c6959a807212be7020839f9b128c SHA-1: c52941955d414fbfe1eadf69e586e626627a1b76 SHA-256: e0cd81065d61b11cabaaa448b1ce95536957f6250f854f6145464811cde8c03e
82 Risk Score

Malware Insights

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

The PDF document contains a lure for a 'free generator / game hack' which redirects to a malicious URL. The ML classifier strongly flagged this PDF as malicious. The presence of multiple URLs related to game hacks and exploits suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-free-edition-game-hack PDF link annotation
    • https://zapoj-kharkov.com.ua/images/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/roblox-comroblox_GM431946152.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://zapoj-kharkov.com.ua/images/games-on-roblox-that-give-you-free-robux_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_003_off00004a38.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A38 24876 bytes
SHA-256: 8b2dcf4c116cb527da17d0d7350671929c5530841547904dc8929ab4396fd809
font_01_sfnt_off00008236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8236 17884 bytes
SHA-256: b79fa13a8014c541ecaa50cf2ea2342c8b7987f05c534eedd8f1cc9ff0cdeb29