Malicious PDF — malware analysis report

Static analysis result for SHA-256 7974030b139a4fd9…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 15:05:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f1ca1a931dab76b910df7c03685f7394 SHA-1: 3f9ec816d827986604adb06340a6e019ea6fdec3 SHA-256: 7974030b139a4fd92e5a272ca9f75f3d0fbf970b02ba45da1251cfc99e05e6a5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/free-games-like-minecraft-game-hack PDF link annotation
    • http://unionmusicaldebenidorm.com/images/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/minecraft-114-4-download-free_GM479516143.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/roblox-source_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-hack-tool-without-human-verification_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
stream_003_off00004c68.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C68 25036 bytes
SHA-256: 3559b5ddb18e0ae98d9e0886f8062a99674812859d232b4a2714b78516c5d72b
font_01_sfnt_off00008537.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8537 17996 bytes
SHA-256: 6316af01e653c53aa8313e9ee065e63d320a9dd1c98e4ac08eccbec55cd1c79a

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