Malicious PDF — malware analysis report

Static analysis result for SHA-256 452aec807a60b3cf…

MALICIOUS

PDF

46.3 KB Created: 2021-05-16 15:18:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 62616cfed06efaeac8f14543976b9ba7 SHA-1: 9c1dafaa99332361adcf283552ee5cce3ab9d55a SHA-256: 452aec807a60b3cfc53993c60c275c793a897e16ea0aa5ba59ed5edceccc451d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a lure for 'free Robux' or game hacks, redirecting to malicious domains. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a social engineering attack designed to trick users into visiting potentially harmful sites that may host further malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

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/431946152/free-robux-without-downloading-apps-game-hack PDF link annotation
    • https://shjbottle.com/upload/files/roblox-free-items_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/omplete-surveys-for-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000487b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x487B 26296 bytes
SHA-256: 7c3ba551eb71b0a11ecc6fdb8c149406796ad366be9e0b81e23850fc36e5b8b7
font_01_sfnt_off000083cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CD 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00008d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7C 19876 bytes
SHA-256: 7dd9be13e4665f5a35086e4b23dd28e6d3ecc39135d95cb28b9ae9c86552181a

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