Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6c903fb8cd124ca…

MALICIOUS

PDF

44.3 KB Created: 2021-05-10 20:07:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0d1f4c7663b55f55281a7a84e56f69c4 SHA-1: ba18ae0a4b5373354bdaffa38eac1a3a9e7e32e6 SHA-256: c6c903fb8cd124ca48249509ea3b2f000e68af2f2ce5da36797b9c16e832bd98
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to a known malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The ML classifier strongly flagged this PDF as malicious. The primary lure appears to be a 'Coin Master Hack Spin Link', directing users to download further content.

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 https://netcdn.xyz/app/406889139/coin-master-hack-spin-link-game-hack In PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1tanahdatar.sch.id/__statics/gudangsoal/files/coin-master-shield-hack_GM406889139.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_003_off00004c97.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C97 30276 bytes
SHA-256: 47d0ac1dac9d97e7ef83221f27e09e341af71d239050244893d1f4eddead179b
font_01_sfnt_off00008c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2A 17892 bytes
SHA-256: 340cad640208a3f63c565dece8f0e8a86db030e36dd2ab9bf46956c7901539b7

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