Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3ea66b1ad105d76…

MALICIOUS

PDF

45.3 KB Created: 2021-05-12 19:02:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: fac66aca7023e51d2a628b5cfff56eae SHA-1: 3fbe4bc82a400428532e38ba8f3f5e7931e60fdb SHA-256: f3ea66b1ad105d76dbc5e603f67fd0d166b0f13e909f6bbee4bb516b26ec91f1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free Robux and game hacks. The document body and embedded links strongly suggest a social engineering lure to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure indicate a phishing or scam attempt.

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 https://netcdn.xyz/app/431946152/free-robux-thumbnail-game-hack In PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/all-coin-master-spin-link-and-free-download_GM406889139.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/block-best-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.min6bandarlampung.sch.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master_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_off00004efb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EFB 27560 bytes
SHA-256: a5ab58a8b32cc5ca0f36ffe85d0fdf92673119cb6552740cdc6d4a00138213e3
font_01_sfnt_off00008da7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DA7 18864 bytes
SHA-256: c969eb26f29950990ddccbf0eeab0a7af3119d1c9c7ebc0fee97903357bc58cd

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