Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa86aee37d9ee711…

MALICIOUS

PDF

45.5 KB Created: 2021-05-14 22:52:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 31a404b778db220cf4e2a88ca18aeb04 SHA-1: 27745173ed27182fc27b90218e36c4b88ee553bc SHA-256: aa86aee37d9ee71133cb0f387af3a1b3a22a837c81161442670d8ec215406189
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/406889139/coin-master-100-spin-hack-game-hack PDF link annotation
    • http://autoskola-scp.com/files/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-freebies_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-roblox-gear_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://autoskola-scp.com/files/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/bux-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/como-hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://autoskola-scp.com/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://autoskola-scp.com/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48F8 26344 bytes
SHA-256: ca18aab5bc7299e9b09300356be59238390b636ad80138cfc58d9f0fadf0bcc7
font_01_sfnt_off000084db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84DB 18168 bytes
SHA-256: b94752bd8cb20f700093b90c56c2ef17d16c5bc85a281ce7bc9a1789d2bac5ea
font_02_sfnt_off0000a6a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A5 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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