Malicious PDF — malware analysis report

Static analysis result for SHA-256 d906aab1d178a5bc…

MALICIOUS

PDF

46.7 KB Created: 2021-06-10 22:46:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 71ba53e084b3090a63e755c3cbfeecb6 SHA-1: d5277dccc021e532b45acb43410267a60c988029 SHA-256: d906aab1d178a5bcb6207ef3c6347f50752d19ed169891a2cbee829a1a890373
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, including one that masquerades as a free game hack generator. The document body and embedded links suggest a lure to trick users into visiting potentially harmful websites. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent.

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/free-hacks-with-no-virus-for-roblox-aimbot-game-hack In PDF document text
    • http://immo360grad.com/images/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/saving-pikachu-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/pokemon-go-free-98_GM1094591345.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/robux-hack-easy-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/pokemon-go-free-download-for-windows-10_GM1094591345.pdfIn PDF document text
    • http://immo360grad.com/images/pubg-uc-zam_GM1330123889.pdfIn PDF document text
    • http://immo360grad.com/images/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/roblox-retro-craftwars-hack_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/cute-free-stuff-on-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
font_00_sfnt_off00005056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5056 28140 bytes
SHA-256: 40305e6e6818ad9a319adda33a5f50110028276f5d2c98e5722edd49be3ed0c8
font_01_sfnt_off000090dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90DC 19468 bytes
SHA-256: e2d4a2740fa277d0b373aac605b546500de4b163abe6641af419af690a937024

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