Malicious PDF — malware analysis report

Static analysis result for SHA-256 bee5127afb1ca376…

MALICIOUS

PDF

44.9 KB Created: 2021-05-31 11:17:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2b52978f47035cc4fb06a31b8f0ca84f SHA-1: 8e466f2b81d683e723a842d86d5bad0db49ef52c SHA-256: bee5127afb1ca3762a90bbb970a48900b97fffa2971721125537b42fb5038148
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a game hack redirector, specifically mentioning 'free generator / game hack'. The document body, though partially corrupted, contains text related to 'free bear mask in Roblox' and a URL that aligns with this theme. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or scam attempt to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-free-bear-mask-in-roblox-game-hack PDF link annotation
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/tiktok-free-views_GM835599320.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-with-copy-and-paste_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://zakatiq.com/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-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
stream_004_off000052cc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52CC 24648 bytes
SHA-256: 1179c8b9ca6ec3db72c61626ec5c523e75b7c3c936d900cda3a0325b45640bd0
font_01_sfnt_off00008b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B7A 18812 bytes
SHA-256: d657aba5db1d8d24f7ed1c229f41e02e1181bc7c4a1c7d14fe5e890c28d93927

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