Malicious PDF — malware analysis report

Static analysis result for SHA-256 4699e127a400def8…

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 09:39:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 792338387d75ba6784134d3089d0b2e9 SHA-1: d12245ecb616c8508428dd4923779224b9ce6223 SHA-256: 4699e127a400def85b53545e899d54f24f40978c3926f26730a88789d305b1c2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary lure pointing to a 'free generator / game hack'. This URL, http://netcdn.tw/app/479516143/how-to-play-minecraft-with-friends-for-free-game-hack, redirects to a site likely intended to host malware or phishing content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is part of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/479516143/how-to-play-minecraft-with-friends-for-free-game-hack PDF link annotation
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/ghow-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/coin-master-free_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/roblox-free-clothes-cheat-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/coin-master-spins-for-free_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/get-free-bc-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/cm-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/freerobux-co_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-wiki_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000333b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x333B 22628 bytes
SHA-256: 431e97902ea2ea43f9d1fd95295b7ecfba855a7dc0af536a3ae0262e7d1a0759
font_01_sfnt_off0000652b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652B 19108 bytes
SHA-256: 5162437770a110f8fb1f842d380ac1671e371cd1c83a627391e03ed6502866fc

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