Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b0d59bec55ad8a0…

MALICIOUS

PDF

50.4 KB Created: 2021-06-09 01:49:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8e69bf3d321057c4fe4b060f5d0521c2 SHA-1: 7b85f91c9ca5c5b9260096cddbee57726587b611 SHA-256: 0b0d59bec55ad8a06a87e4d97666aea6eb30221505a28e0efc104e364a40893e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary redirect URL is https://netcdn.tw/app/431946152/how-to-get-free-robux-on-roblox-meep-city-game-hack. The document body and heuristics indicate a social engineering attempt to trick users into visiting these malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9779

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/how-to-get-free-robux-on-roblox-meep-city-game-hack In PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-robux-proof-2021-promocode_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-do-i-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-script-injector-roblox_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-buying-apps_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-hacked-client-buy_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-can-i-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/how-to-get-free-ninja-animation-in-roblox_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-denisdaily-free-robux_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/download-roblox-hacking-software_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-how-to-activate-hack-gui-script_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/comment-tre-un-hacker-sur-roblox_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/roblox-phantom-forces-cheat-engine_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://thinkpro.ca/wp-content/uploads/fsqm-files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://www.nrzroblox.comIn 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_off000055db.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55DB 27304 bytes
SHA-256: a40a645ba24b84d2e8d86d5b9b2b17072c218bee110daf56cdcd8ac76ae65129
font_01_sfnt_off000093cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93CF 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000a077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA077 19028 bytes
SHA-256: 3b1b545b0b0c50b7416741ff379fc2ccd74d8d3e2f998c3d2e4ecfa6937a3f1a

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