Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1bbb8d2bfad7002…

MALICIOUS

PDF

35.7 KB Created: 2021-07-09 14:13:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 82e52ca79cce24817cda43fa894ef2f2 SHA-1: e9a477735d64fa2d9c0ac69c9627e2db356b7ce7 SHA-256: a1bbb8d2bfad70020e9ecf65916f24898bb223ce541faa484b3d375e1dc6df9a
160 Risk Score

Malware Insights

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

The ML classifier strongly indicates maliciousness, and the document body contains URLs related to game hacks and generators. The presence of a download button lure further supports the intent to trick the user into downloading a potentially malicious payload. The embedded URLs suggest the document is part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/oprewards-points-generator-game-hack In PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/robux-free-xyz_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/robux-website_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/how-to-hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/just-go-mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/free-roblox-card-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/prisonbreak16-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/r-free-robux_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/are-roblox-decals-free_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/free-robux-hack-2021-october_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/coin-master-gold-cards-free-2021_GM406889139.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/roblox-owo-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://wwlogistic.net/uploaded_files/userfiles/files/how-to-hack-to-get-free-robux-2021_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
font_00_sfnt_off00003534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3534 22224 bytes
SHA-256: 7aec5a66b70a2378afc1bff6d31466ff623299ddbdccd0f11d6bf5831ba6bbe7
font_01_sfnt_off000066b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B4 18936 bytes
SHA-256: c272ade8f0f667fa31c102d32dc91e55ca68e3a8563b092fb1befac4b7a2a2f7

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