Malicious PDF — malware analysis report

Static analysis result for SHA-256 698aef47f9fc0c1d…

MALICIOUS

PDF

45.7 KB Created: 2021-05-31 03:08:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 1f6d9e5b35197f31c831bcffdedea4d3 SHA-1: 30ac4d60716c38599ff1a35089f4961d775f5697 SHA-256: 698aef47f9fc0c1dddff260bd59f6599f6de196194ee46d8dd526625f4358f95
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body, though partially corrupted, also contains similar URLs. This suggests a social engineering attack designed to trick users into visiting malicious sites, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9580

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/406889139/free-spins-coin-master-unlimited-game-hack In PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/get-free-robux_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-discord_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • https://taxandmore.nl/wp-content/uploads/fsqm-files/minecraft-windows-10-free-code_GM479516143.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_003_off000054ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54EE 25244 bytes
SHA-256: e0524630018422691c223d02b4cdfe59c27822ef205e708174f394e0102c9e2e
font_01_sfnt_off00008ef3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EF3 18580 bytes
SHA-256: 8aad0f2405ec9a3272b05944b48a23572f7af0293916013bea6eee8874d320e7

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