Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff11bf66f60f0d70…

MALICIOUS

PDF

50.0 KB Created: 2021-06-03 13:52:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 77aba9d043114976c3f4798a47807950 SHA-1: 2f1dc23a2aa6bc59f885965e38926dff33059ab9 SHA-256: ff11bf66f60f0d70e2e0ac996ccc2ab32b29cc27c37a3a7e20fff77083350b03
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 0.9796

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/479516143/minecraft-logo-maker-free-game-hack PDF link annotation
    • http://www.perpus.stfm.ac.id/repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-get-coins-on-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-generator-script_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/get-free-robux-no-human-verification_GM431946152.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
stream_004_off000052bd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52BD 30752 bytes
SHA-256: 05c0031fe2a2bb604b61c1dbb0a15ba831d998685961558d39de66128b052359
font_01_sfnt_off0000973e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x973E 2892 bytes
SHA-256: e0a0e7499c3dd10c5114bd1538d6e258e6cb3acdd4f79d9538668087a4bdd2cc
font_02_sfnt_off0000a127.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA127 18168 bytes
SHA-256: 297237ce210fb0ad9e803fe1f66d3dc70a27f861bbe6cba603c2ca3e8103b74b

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