Malicious PDF — malware analysis report

Static analysis result for SHA-256 46805878d999bb7d…

MALICIOUS

PDF

46.2 KB Created: 2021-06-04 00:57:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a532d5f053c7032899a1a63cde2f8954 SHA-1: 3bd78cc0adde99e0311a61c503a2b860f5ddfdd4 SHA-256: 46805878d999bb7dc6ad656e067c332a5f3254f4c8bec44ce892a66dffcd156d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a free game hack or generator. The primary link, https://netcdn.online/app/406889139/best-site-for-free-coin-master-free-spins-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack, likely intended to lead users to malicious content or further compromise. The presence of numerous related URLs further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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/best-site-for-free-coin-master-free-spins-game-hack In PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-spin-today-coin-master_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/tiktok-free-real-fans_GM835599320.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://e-lib.smaxaverius5.sch.id/repository/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.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
stream_004_off00004efd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EFD 24912 bytes
SHA-256: 50c54bbb04fb580479951768de7eaf025ab187ec2df0c07e8f630263ccbc2e2f
font_01_sfnt_off0000879d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x879D 3124 bytes
SHA-256: a0e4a5f378f23ac829e40ef1a0638115ffab18b17acd7561ed9b637601232063
font_02_sfnt_off0000927f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x927F 18104 bytes
SHA-256: 879ff18a357a82badab2459f221a11f7b700cc3f508e85be5618259a1268201a

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