Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dc476efb03c870e…

MALICIOUS

PDF

35.1 KB Created: 2021-06-24 14:34:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: cb753ee9ce1decfd4e52436c701103f6 SHA-1: e3d156766a250a0ffadda8be43965fb554091614 SHA-256: 0dc476efb03c870e47f6a96b6b2c9bd2ebcb718bed5b24a1fe04090fdd5e606a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The primary lure URL is http://netcdn.co/app/406889139/coin-master-free-spins-for-today-game-hack. The presence of these links and the ML classifier's high confidence score indicate a phishing or scam attempt designed to lead users to potentially harmful sites.

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.co/app/406889139/coin-master-free-spins-for-today-game-hack In PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/mcpe-download_GM479516143.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/how-to-get-free-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/free-robux-working_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/rbx-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mapuicijantung.sch.id/__statics/gudangsoal/files/make-free-robux_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
font_00_sfnt_off000032b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B5 22848 bytes
SHA-256: a5cc91974043b832f7940a8ca3fa20f25f6ecc1c9c99e0bc0ad0735057e7564f
font_01_sfnt_off000065da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65DA 18528 bytes
SHA-256: 611292c7b78d9aef83f236a5f61e8588922333099173db31565d3b831f2ee55a

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