Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c6bb26e3170a7fe…

MALICIOUS

PDF

37.0 KB Created: 2021-07-03 22:11:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 276e74df4d6845ee87d49578b12b1043 SHA-1: abc0985fe52bc707964a7292e240125982bdb72d SHA-256: 7c6bb26e3170a7fe08e4cb374e7d9a4831db258e9054ce6a2bc8404d608c71da
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple external URLs disguised as 'free game hacks' and 'followers', which is a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. Although no scripts were extracted, the embedded URLs and the nature of the lure suggest the document is designed to redirect users to malicious sites, likely for initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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 http://netcdn.tw/app/835599320/buy-tiktok-followers-free-game-hack PDF link annotation
    • http://mbbs.hr/files/robloxhacks_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/hacks-and-cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-how-to-protect-your-free-model-from-being-copied_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/robux-win_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-minecraft-bedrock-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-hack-any-roblox-account-using-windows-command-prompt_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/everything-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/mobilehacks4u-free-roblox_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-rtx-download-free_GM479516143.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
font_00_sfnt_off00002fe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE0 22368 bytes
SHA-256: 9bcc30cf53ae7b6e87d05e8a5d9aa01eaba256dc207518b74e51b0b71657db09
font_01_sfnt_off000061a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A4 3124 bytes
SHA-256: d6dd29adb69da7f9a23a5e3791282a61e2f811794f560a0c409c8747766d9102
font_02_sfnt_off00006c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C5D 18748 bytes
SHA-256: 24e9b1d20a91491b38d70aa6ee54a284670a00c451512989a26a72f22b156050

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