Malicious PDF — malware analysis report

Static analysis result for SHA-256 f90099bb13f06677…

MALICIOUS

PDF

49.9 KB Created: 2021-06-07 14:33:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dafc4e9b1bf5949b5c7d0a99310454ba SHA-1: 84c6ce0b3e2b3554241188d99221121f549de4bf SHA-256: f90099bb13f06677f9fad6a6c936ced1d7f99d4e8ff967aa1d16c27e462432ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games. The primary malicious link identified is https://netcdn.tw/app/431946152/roblox-project-jojo-free-items-exploit-pastebin-game-hack, which is flagged as a known malicious redirector. The document body, though partially corrupted, also contains references to this URL and other similar lures hosted on elitesoftsolutions.com, suggesting a phishing or scam campaign aimed at users seeking in-game advantages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9861

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/roblox-project-jojo-free-items-exploit-pastebin-game-hack In PDF document text
    • http://elitesoftsolutions.com/images/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/cpbildco-robux_GM431946152.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/gamepasses-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/bonus-free-day-roblox_GM431946152.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/minecraft-jar-free_GM479516143.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elitesoftsolutions.com/images/how-to-hack-any-roblox-account_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_off000053b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53B2 33852 bytes
SHA-256: cd93248aa2e3d12e82e0ab82a7faaa4d5e7d172194bcc66d945946432f9e5524
font_01_sfnt_off00009e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E06 19344 bytes
SHA-256: e06d1a638d11f15f50b5fae6e14e448297cd8c78cb6a731f08844ccad60f26c5

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