Malicious PDF — malware analysis report

Static analysis result for SHA-256 08708ca8ecdb0bfc…

MALICIOUS

PDF

55.0 KB Created: 2021-05-12 03:37:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a20ca39b62e0acd5b48422646f88c7b5 SHA-1: 254dd6616068dd18216829086656acb379bfd28e SHA-256: 08708ca8ecdb0bfc4637bb9eaa7a12649e30a1974dab8e5a1669b17152af1b65
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 0.8324

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/406889139/todays-free-spin-and-coin-links-game-hack PDF link annotation
    • http://stikespantirapih.ac.id/home/repository/114-4-hacks_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-hair-roblox-boy_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-many-levels-does-coin-master-have_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/what-is-a-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-comroblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/get-more-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-coins-and-spins_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_003_off0000497a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497A 26452 bytes
SHA-256: c79b2bb950f84571441c4093da6eac989603772fc07e8c57ccd0c46e33d80965
font_01_sfnt_off00008832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8832 3088 bytes
SHA-256: e7854aff7cbc8fbdeb85d2b3d6248d12dc820ede8a581f4eac107fa6446c2222
font_02_sfnt_off000092fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92FD 7960 bytes
SHA-256: cf7ae5cf6bef3222f5a26bec705b492fed0278aec6b16ec101aeda46e0edd2b2
font_03_sfnt_off0000a623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA623 18304 bytes
SHA-256: fe41b9c6f73a07cbbf88dd054bef46cc881cfc19b14a93a0ff48235cedd50557
font_04_sfnt_off0000c826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC826 4272 bytes
SHA-256: fac9a06ceb5574feb8580c075df3ef69dfbd0efa4947186cfe90f11b68eaafb0

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