Malicious PDF — malware analysis report

Static analysis result for SHA-256 22df7fd951a5ec2a…

MALICIOUS

PDF

33.3 KB Created: 2021-07-06 05:15:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 054697bc745641e67dc8f351f8366a51 SHA-1: c986852c6d19c64a4c74012ca3e97524ae776fa8 SHA-256: 22df7fd951a5ec2a4d2a109fa9bb83fb5b4fc59514dac2bc407dfde57a3b4dae
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links, including one directly pointing to a 'free generator / game hack' lure. The document body reinforces this by mentioning 'free Robux' and 'game hack'. This suggests the primary goal is to redirect the user to malicious websites that likely host further malware or phishing content. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.tw/app/431946152/is-there-any-way-to-get-free-robux-game-hack PDF link annotation
    • http://www.pspmrsmkkb.com/webopac/repository/hack-a-game_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/ar-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-free-account-generator_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-hack-2021-free-robux-generator-working-method-scratch_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/gift-card-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-world-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/adopt-me-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-cheat-tycoon-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-coin-master-spins-links-2021_GM406889139.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
font_00_sfnt_off00002ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD1 22296 bytes
SHA-256: af5da0d8cc4e24d28003379df48f39f5f353d352f1cd7429f7c0063e83a9cf9d
font_01_sfnt_off00005c3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C3F 19364 bytes
SHA-256: 80b6394bfb37edc2ea14afbfa24f605699f6492fbe141c801abd30e44507c20a