Malicious PDF — malware analysis report

Static analysis result for SHA-256 7962dd642010ceab…

MALICIOUS

PDF

44.9 KB Created: 2021-05-11 21:30:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f955aa8f696dee9e191dab15b9ab813e SHA-1: 69dc71f5e2084997c0237da4930826caf5197ef2 SHA-256: 7962dd642010ceaba37dc2fcbec8aeb2e446eaa3e70131b987bb7e7a7ebacac0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains links to a known malicious redirector, specifically advertising a 'free Robux game hack'. The document body, though heavily obfuscated, contains references to the malicious URL and other similar lure documents. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/431946152/rbx-free-robux-game-hack In PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/static-moonactive-net-rewards_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/coin-master-free-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/roblox-free-wings_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/coin-master-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/free-spins-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://apps.esqbs.ac.id/ebs_library/repository/roblox-hack-download_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
font_00_sfnt_off00004749.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4749 27004 bytes
SHA-256: 10353744bfb2f731410b80b5f5040f6f49c3b7b719290dce0393bd5d2e136a9c
font_01_sfnt_off00008408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8408 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00008db9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB9 18012 bytes
SHA-256: 03f7603bc8a5695bbd0c39958af3fcfd5a932cbc13eba7563a8e8ca8b5ca4208

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