Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f63ae710bfd8e02…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 22:36:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 82549b893bfa5b4df5a73e9f9c22fd49 SHA-1: 09b06956a293588d527718643c62e37c2a96c34e SHA-256: 5f63ae710bfd8e026a529e33413613840b6783b286d2a5debba13be3f49afaa5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs strongly suggest a phishing or scam attempt aimed at tricking users into visiting potentially harmful sites. No scripts were extracted, but the presence of numerous malicious redirector links is a high-confidence indicator of malicious intent.

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.tw/app/406889139/coin-master-app-for-free-spins-game-hack In PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/are-you-allowed-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/minecraft-client_GM479516143.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-admin-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/pokemon-go-free-150_GM1094591345.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/auto-clicker-mac-free-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-flow-roblox_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/bleu-hack-roblox-download_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/coin-master-free-link-app_GM406889139.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://windhorsetrek.com/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3182 22596 bytes
SHA-256: 0f212bf1eb26e608ceed54b3cbb21faacf9724569fe97c4c07d3b3476999e855
font_01_sfnt_off000063df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63DF 18176 bytes
SHA-256: bc884a3229ed83de6fe0f09d3de4cbfae9ae8b960387018b9df9e9e5860be4ee

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