Malicious PDF — malware analysis report

Static analysis result for SHA-256 38332fa57004c4d1…

MALICIOUS

PDF

44.5 KB Created: 2021-06-09 04:18:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 56c97c1235300ef3709bc17e74e5d109 SHA-1: e4c2795ca4fe83ce61f0ece5d293e6bd799e67aa SHA-256: 38332fa57004c4d1c1269830e3502f4d06070b8382570059366e0f6a9c14158d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary redirector URL is https://netcdn.tw/app/431946152/how-to-get-free-money-in-bloxburg-roblox-game-hack. This indicates a social engineering tactic to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/how-to-get-free-money-in-bloxburg-roblox-game-hack In PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master--hack_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-shirt-roblox_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
stream_004_off000050c0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50C0 25228 bytes
SHA-256: 0e9858293e87c63e1293a38555eaa58dae035447f357d4b2df8e07406164898f
font_01_sfnt_off0000891c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x891C 19020 bytes
SHA-256: 6f66d81c5e4edb76c5e42c7524e9dba1e81ae892b53189ce2da6f50359608181

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