Malicious PDF — malware analysis report

Static analysis result for SHA-256 887b804ef23869da…

MALICIOUS

PDF

49.3 KB Created: 2021-06-11 08:35:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a2db986cbf2840363249de3b28cb4eb4 SHA-1: 7b4091ed3cab15bc0be189f218f4fdd7d96904f5 SHA-256: 887b804ef23869da2c216a3b9549b25fec9907d881dd5164911c322f4459c095
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators'. The primary lure appears to be a Roblox-related hack, directing users to a known malicious redirector. The document's structure and embedded links suggest it is designed to trick users into visiting potentially harmful websites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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-dinosaur-simulator-hack-2021-game-hack In PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/2021-free-robux-glitch-in-febuary_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/new-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/roblox-jailbreak-free-vip-server-1-25_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/minecraft-bedrock-free-download_GM479516143.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/roblox-explorer-hack_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://bidship.co.za/uploaded_files/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051eb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51EB 27448 bytes
SHA-256: c523f278a663c4a49af8ab246a1578f99899e863a0d274a4eaa1ddc8f7da702d
font_01_sfnt_off000090c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90C6 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00009a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A77 19376 bytes
SHA-256: e88d0b91dba64c9e82c526915f389ed983c33aeec2f4784c12138522cd42d3a8

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