Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b6219706fe2ee2f…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 03:26:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 1f6d1d31001c3baaeea65b34caa97315 SHA-1: 1e6239dd9eb7f622692d84ae7d7fa4839d442971 SHA-256: 8b6219706fe2ee2f6ae2082539c90d6ffe6a7f6c155e2faf5be3dd6ffeb5264a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free currency, such as 'coin-master-heaven-free-spins-game-hack'. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The presence of a visual download button further supports the lure, aiming to trick users into clicking through to potentially harmful content.

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.tw/app/406889139/coin-master-heaven-free-spins-game-hack In PDF document text
    • http://mbbs.hr/files/tiktok-followers-free-no-verification_GM835599320.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/free-robux-glitch-may-2021_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/pubg-uc-esp-hack_GM1330123889.pdfIn PDF document text
    • https://mbbs.hr/files/i-want-to-play-roblox-play-free-online_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/software-for-cheat-engin-66-to-not-make-roblox-carsh_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/how-do-u-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/robux-only_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://mbbs.hr/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-hack-minecraft_GM479516143.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_off00002f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6A 22688 bytes
SHA-256: d3240fed19a830e194042391cb2d4ddec78df5f45f6e4c558a254f87c0a1f60c
font_01_sfnt_off00006258.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6258 18288 bytes
SHA-256: 11966e290def2b2ba23d88de0bc515607abc7bebf3889daddabdd9920fce0bf4

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