Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e7121d86bc7b3e3…

MALICIOUS

PDF

46.3 KB Created: 2021-05-10 13:18:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 080c9c3aff9d9baf8df2c80973897ea5 SHA-1: 74832763330943c99300a1de7efa4159099844f3 SHA-256: 3e7121d86bc7b3e35c8f21d79d8a833858d5f2216a4e164795b9f488dce6ec19
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 0.8696

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/coin-master-free-spins-link-game-hack PDF link annotation
    • http://perpus.stikesphi.ac.id/repository/free-old-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-coins-twitter_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/free-robux-app-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpus.stikesphi.ac.id/repository/clean-master-hack-coins_GM406889139.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_003_off00004cd6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CD6 27436 bytes
SHA-256: 1fc6fbcc64daaf6767285d1f745b449e29b735bf6fa20ac698288a2b69ce5054
font_01_sfnt_off000089b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B7 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9368 18056 bytes
SHA-256: a4f33549350803e8a819cbfad6b4ff3cdc0b302ceab74af9f2f663eab6bd9ec0

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