Malicious PDF — malware analysis report

Static analysis result for SHA-256 a907c3cfaf6e3247…

MALICIOUS

PDF

47.2 KB Created: 2021-05-16 06:49:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3100c2f4dac2c21441be206dcf765b3b SHA-1: 120220c4c73303882cf4fb2e4670036cc1cdb9af SHA-256: a907c3cfaf6e3247b9c51d205b16e83c4ce3189c2c2d4ffbe1e8f7c99c24b27f
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 0.8948

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/431946152/info-roblox-com-robux-game-hack PDF link annotation
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/coin-master-hack-lost-world-2021-com_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/grab-points-login_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/free-pet-food-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mts-al-ikhlas-woimenda.sch.id/__statics/gudangsoal/files/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A33 27100 bytes
SHA-256: 61b82015a3e303664f176a8dd126a8a36e3ec4e5f6cb57ecf67ffc9d3fb60989
font_01_sfnt_off00008947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8947 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9659 18184 bytes
SHA-256: 2666f19638e8a85676fd26a40fcd2c9ad598b57ed36ce75be6242751bafc6488

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