Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5f2a44430530803…

MALICIOUS

PDF

57.5 KB Created: 2021-06-03 19:46:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2c1428a2d64e35f57d5dc542fe40f15b SHA-1: 24d37776a97b1ddf401c906345b1c510fa21b3a1 SHA-256: b5f2a444305308037b4c809d22acc95c443798d0417797db1c35d9e604a6777d
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 0.9684

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.online/app/406889139/50-free-spins-coin-master-game-hack PDF link annotation
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/tiktok-free-view-iphone-apk_GM835599320.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/pokemon-go-free-677_GM1094591345.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51CE 27360 bytes
SHA-256: 1d9c09f166c7ea14abe7d43113dfaca34e5d3f2c985106034a9e15d113e068d4
font_01_sfnt_off000091dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91DD 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off00009ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA8 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000afce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAFCE 18192 bytes
SHA-256: a4943b7840cd3959a8ceaa1ed690fa7e50048a9b71dafef76241fe8ac415bb35
font_04_sfnt_off0000d191.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD191 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

Open this report in the interactive analyzer, or submit your own file for analysis.