Malicious PDF — malware analysis report

Static analysis result for SHA-256 24e3554b117481f5…

MALICIOUS

PDF

43.0 KB Created: 2021-05-11 06:26:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: f6668867bb4ade6452a0353e80db113c SHA-1: dc352eb7b3fdb48b45d845a583e4c08dfd4df05f SHA-256: 24e3554b117481f5101042bc6759b5a56c17115c93a3b87aa8a42fe7c6e8fd45
82 Risk Score

Malware Insights

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

The PDF document contains multiple links, including one identified as a 'free generator / game hack' redirector. The ML classifier also flagged this PDF as malicious with high confidence. These findings suggest the document is designed to trick users into visiting malicious sites that likely host malware or facilitate further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-free-download-laptop-game-hack PDF link annotation
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/giftrobux-com-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/get-robux-today_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/easy-way-to-get-free-robux_GM431946152.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
stream_003_off00004d8f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D8F 24700 bytes
SHA-256: b3cbdea87022cdc4fd5a294dd62979cbdc9252dcf0b4079dc4c18d5b331a62d3
font_01_sfnt_off00008565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8565 18464 bytes
SHA-256: 6197069052dd1f902b9484e0bf6d7537b85552f28950007395536a6c9025e818

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