Malicious PDF — malware analysis report

Static analysis result for SHA-256 070e997d4988a945…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 22:17:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 6d7af610ee55b6bf05dbb3bf4a3f1eef SHA-1: a7fa49de3ce56171869c6a504020829dc92d8e0a SHA-256: 070e997d4988a945c4dca73a6c37255c56dbc36422bc3d942c3dd7f6e32de2d6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure is the URL https://netcdn.online/app/406889139/fb-coin-master-hack-game-hack, which is associated with known malicious redirectors. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for further payload delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/fb-coin-master-hack-game-hack In PDF document text
    • http://libnh.stikesnh.ac.id/repository/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-spins-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-hack-linkmon99-on-roblox_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-free-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/mistplay-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/static-moonactive-net-link_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-play-roblox-for-free_GM431946152.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_004_off00005025.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5025 24324 bytes
SHA-256: 0030c8f1d2253e344871af6c3b03d64cc39acfd15220e2d8f94f5dd8e8fcaa22
font_01_sfnt_off000087c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C9 18040 bytes
SHA-256: fbb613cf7ce1cb36a0a8d280c3838effdb84971329b91d5b96a8bc41d66c780c

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