Malicious PDF — malware analysis report

Static analysis result for SHA-256 750a3f104c27fde1…

MALICIOUS

PDF

43.5 KB Created: 2021-05-19 08:41:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 876b223ba5c8ebfd40e2668d5661b2fe SHA-1: f363ab7b9a2436922a9e2ba4cc2b247f6adca67c SHA-256: 750a3f104c27fde14492904490eec2473eb53df9db888c16c3bd533191fc8c24
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that lead to known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs suggest a phishing attempt to trick users into visiting these malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-free-coins-and-spins-hack-game-hack In PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-spins-hack-link_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/install-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-robux-games_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-spins-link-blogspot_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_off00004c84.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C84 25788 bytes
SHA-256: 3e1e52668ba1550bbb312c79a528b61239884b61facbb2fa6d85be31f3b1b107
font_01_sfnt_off0000881f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881F 18228 bytes
SHA-256: 354d04eea8306255969a9ffde93a2dc9fe516d06f825e89064d5817ccb1fcce8

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