Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee080bc0961b1f2…

MALICIOUS

PDF

47.1 KB Created: 2021-06-09 16:28:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d7f78bb79ebf0884e2c149c13a37d3b7 SHA-1: c73553ec50542f7c5a583bd33548fd820a20ef8d SHA-256: bee080bc0961b1f23ee5fed61270f3f15740154e4c485ab50a09072d4c924863
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary redirector URL is https://netcdn.tw/app/431946152/star-codes-free-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/star-codes-free-robux-game-hack In PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/how-to-hack-all-roblox-games-pc_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-hack-extension_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id//repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/roblox-cheat-robux_GM431946152.pdfIn PDF document text
    • http://perpus.poltekeskupang.ac.id/repository/hacking-words-for-roblox_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_off00004eb3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EB3 24736 bytes
SHA-256: b2fe3f84d38b4f4c073e22617c1d206a8be6d3e78f1873965ca976302fa0af30
font_01_sfnt_off000087c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C7 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000946f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x946F 18520 bytes
SHA-256: 04284ce013c658450ac2c0b943f38463df26b69e6d40857a6c563fa81b3f4e54

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