Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c8bb78df0b88868…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 08:05:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d2396e469e657067a435696c6403530e SHA-1: ad3d9f3a5e3b9cd9e228c76f1ebd5cfcb7ee9a87 SHA-256: 3c8bb78df0b88868e3044c7b9fed0211b7719925987a03450eb409ee76669cf1
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 0.9797

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/coin-master-game-hack-link-game-hack PDF link annotation
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spin-link-daily_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/inappropriate-roblox_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-install-free_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_off000050ad.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50AD 24204 bytes
SHA-256: 3f82ca4f64a9967acbfd4dece973c31f8374ea19f18a40a0157de40735e9150b
font_01_sfnt_off0000881c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881C 2820 bytes
SHA-256: e5f6ec650849eefe6bc6a1649c2875ce35328d23e4196945bba66cc43e5a49d4
font_02_sfnt_off000091bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91BB 17976 bytes
SHA-256: 4c1d26c1fb4feed8092d99a8761960172faa49b0c213e7324f16c91828cd6f14

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