Malicious PDF — malware analysis report

Static analysis result for SHA-256 172ef154a78250b9…

MALICIOUS

PDF

47.4 KB Created: 2021-06-09 10:22:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 85d47d95365b6c99103ea953bf96f81a SHA-1: 27607527ed7f85d6ea1e7dbbcc5bd1abae8abab4 SHA-256: 172ef154a78250b9b19f8055f1514ceba9e4fe6e4fa2e729c6b68fcbffb8c47e
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors, disguised as lures for game hacks and free generators. The primary URL, https://netcdn.tw/app/431946152/i-hacked-lolpuggys-roblox-account-ha-game-hack, is a key indicator of this malicious activity. While no scripts were directly extracted, the PDF structure and heuristic firings strongly suggest an attempt to exploit users through deceptive links, likely leading to further malware downloads or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/i-hacked-lolpuggys-roblox-account-ha-game-hack In PDF document text
    • http://schmittmusic.de/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/bux-gg-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/robux-com-free_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://schmittmusic.de/images/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/get-robux-today_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://schmittmusic.de/images/roblox-catalog-free-items-2021_GM431946152.pdfIn PDF document text
    • http://schmittmusic.de/images/pubg-uc-avatar-hd_GM1330123889.pdfIn PDF document text
    • http://schmittmusic.de/images/roblox-hack-tool_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
stream_004_off00005333.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5333 28404 bytes
SHA-256: cab52426a9cacb6be29165bc3ded6db34179217f96c7299485f17e55130f4644
font_01_sfnt_off000093e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93E5 19244 bytes
SHA-256: 60b83c7502ff35e81f32a8b6aa9f6e29ef0af4e71fd11baba68a7e121fb0b5e4

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