Malicious PDF — malware analysis report

Static analysis result for SHA-256 6247083278a2f91e…

MALICIOUS

PDF

53.8 KB Created: 2021-05-11 16:21:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cd0737c902e0b1d8fd8cd64a03cde4fa SHA-1: 2a5092aa1a823d5e6d29561eefe442ceb6fe3638 SHA-256: 6247083278a2f91eae5ea165feab1489017c357e5aa9b05fb718eb944015d3a5
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 0.8795

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-apk-free-download-game-hack PDF link annotation
    • http://aeridefense.com/image/data/files/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hacks-for-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/robux-now_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-app_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/hack-a-game_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-vip-hack_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://aeridefense.com/image/data/files/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004928.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4928 27248 bytes
SHA-256: 872981f5552b1dfca34addaf725ca2c241feb9d7e521d0fc96cd8624c7cf4c3f
font_01_sfnt_off00008661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8661 8248 bytes
SHA-256: 3ebc046353ffc9226d68c2ce7b630ed1ce2e3941836f6c2a76c9722738d69407
font_02_sfnt_off0000a069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA069 4232 bytes
SHA-256: ab6320ab342704d2c5943abfba82ed4837bf2da871c91621741fd4cfd15c6ed5
font_03_sfnt_off0000aef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEF5 18636 bytes
SHA-256: 460052af6c2621f53863fdd0e184641c8149664fef9b3bc68df6f3fcb4cff320

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