Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9bd0df4c51740b1…

MALICIOUS

PDF

44.4 KB Created: 2021-05-14 09:14:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d78feeb9637d4dfca72c7fa15c8b8ba8 SHA-1: 73a6356b3e0f6d656da40a5e23367b2140e0bb1b SHA-256: f9bd0df4c51740b16a0e9ba7845f573834987453c66400ae498dd25e1e0db561
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack lure. The document body and embedded URLs point to various game hack download pages, suggesting a social engineering attempt to trick users into downloading potentially malicious software. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/hack-coin-master-apk-game-hack PDF link annotation
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/coin-master-connection-lost_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • https://elearning.masirsyad.sch.id/__statics/gudangsoal/files/free-spin-link-in-coin-master_GM406889139.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_off00004b58.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B58 24132 bytes
SHA-256: 97b52359e919cbafad4b07b1de41afd86e9a5dca0ddd11a2db778d3554dce401
font_01_sfnt_off00008261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8261 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008c13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C13 17892 bytes
SHA-256: 9c4dada9bbcb376b19026f9d82cd29b1bcb88de2b1ea71a23b293af0df71213a

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