Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0799a366c139936…

MALICIOUS

PDF

47.8 KB Created: 2021-06-03 23:10:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d7b1c33c2770a5b6aaf003d9c950b923 SHA-1: bafdb71a524e372941d8e1cecfa264a2b920edac SHA-256: c0799a366c139936908e15ac40b7c093a974f11c696e25a24d5d0da9ae461476
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics suggest a lure for 'free generator' or 'game hack' content, which is a common tactic to trick users into downloading further malware. The embedded URL https://netcdn.online/app/406889139/how-to-get-free-spins-grom-coin-master-game-hack is a primary indicator of this malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/how-to-get-free-spins-grom-coin-master-game-hack In PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-roblox-money_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-800-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_off000055d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55D1 25768 bytes
SHA-256: b8af82c00aa9d4f0bdea340c62a6a9ac5f5e3f4452969d733f631aee61610693
font_01_sfnt_off00008e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E7E 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9830 18308 bytes
SHA-256: 54bc4cb339ab54a414e81dbc8c78cd983f23e840174d14985084a71892f993b4