Malicious PDF — malware analysis report

Static analysis result for SHA-256 706ff4a9d1815543…

MALICIOUS

PDF

44.7 KB Created: 2021-06-04 02:53:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6e2492b043b7474e2f4fc2a83c9a2c58 SHA-1: 6ce31ff7072db6e997dd3f01ece29df3782de3f5 SHA-256: 706ff4a9d1815543298ad77f5d73382b1cec4dd1ac8df05dc8ce8649a1d27e4a
160 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it links to malicious redirectors and promotes a 'free generator / game hack'. The document body, though heavily obfuscated, contains a URL matching the malicious redirector. This suggests the PDF is designed to trick users into visiting a malicious site, likely to download malware or engage in further scams.

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.online/app/479516143/minecraft-world-free-download-game-hack In PDF document text
    • http://library.stembi.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/roblox-how-to-get-more-fps-hack_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://library.stembi.ac.id/repository/free-robux-place_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_off00005364.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5364 25132 bytes
SHA-256: 37d3dfc868ac87f4246455a4417a571d0b5ec794bb16da380f144a9d1768cbb9
font_01_sfnt_off00008b96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B96 18488 bytes
SHA-256: 53d97953320c4a27ca75ab54c15cccabcbe94f1a7eef6df1be3b25df4f56750c

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