Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfd6f07054ba938f…

MALICIOUS

PDF

50.3 KB Created: 2021-06-11 04:46:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b655ea0a001a5cbf53373ac13d61e01e SHA-1: 6acfdfbfc97a89452427b7729e1b95ab819cc2ac SHA-256: dfd6f07054ba938ffe49002e86470dad86d5c4b17cc66643ae41b646951e2289
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising 'game hacks' and 'free generators' for popular games. The primary lure URL is https://netcdn.tw/app/431946152/hacker-speech-roblox-game-hack. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest a phishing or social engineering attack aimed at tricking users into downloading further malicious content. The document's structure and content align with a spearphishing attachment delivery method.

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.tw/app/431946152/hacker-speech-roblox-game-hack In PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/roblox-free-download-pc-windows7_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/coin-master-server-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/tiktok-fans-for-free_GM835599320.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/roblox-inspect-element-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/how-to-get-free-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/pokemon-go-free-play-online-without-downloading_GM1094591345.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/roblox-hack-client-ios_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/descargar-roblox-hackeado-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.smkn1pbg.sch.id/repository/can-you-get-minecraft-for-free_GM479516143.pdfIn 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_off00005142.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5142 29580 bytes
SHA-256: b51fd15f975f07eb3fd3caed874272cfa3d053122657cfe7efeddf549bb9ac31
font_01_sfnt_off000093d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D0 4008 bytes
SHA-256: 515da38a799acdefd039af3a0dfb6ec4815b572058c9bd492ec5a77cd7658593
font_02_sfnt_off0000a15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA15C 18524 bytes
SHA-256: 98832607dd1a3553eaa9de83dc1914de4b8c575504b6286654d70ad59feacf36

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