Malicious PDF — malware analysis report

Static analysis result for SHA-256 0be3bc23355c8e40…

MALICIOUS

PDF

49.4 KB Created: 2021-05-12 21:55:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: eb25c3517214878a2c06c898e4b8c985 SHA-1: a332a16978c16a1b1c3ee1683fe1e7c9bd0cbf83 SHA-256: 0be3bc23355c8e402251b1b3d53408d3022d51197043886901a7bef722753318
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/lazyblox-com-free-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/lazyblox-com-free-robux-game-hack In PDF document text
    • http://lib.baruna-husada.ac.id/repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-raid-hack_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-hack-app-for-ios_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/abd-roblox_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-spins-and-coins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/mcmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-daily-free-coins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/robuxhub-net_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45AB 26492 bytes
SHA-256: f93eaa0c4d76652983a2fe6419e1775c54d159572e97aa73e6cc6517a6548e3c
font_01_sfnt_off0000834f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834F 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00008ff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF2 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_03_sfnt_off00009c9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C9A 18840 bytes
SHA-256: c7a12f46af2ab2e47f5138dce66a585f9a7928693d977e55c66cac0a0236f754

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