Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcc8ec4c9a810e22…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 13:00:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: edfadb288e1d1a687cbea60c7436376b SHA-1: 1894925b48c6e131184a7870edf76d1a1a543cbd SHA-256: dcc8ec4c9a810e22f9ab46be41f1236479afe079e92c4302fa5ddb5ac03adbc9
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 0.9980

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 http://netcdn.tw/app/479516143/wurst-18-9-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-modify-roblox-leaderboard-stats-in-cheat-engine_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/best-free-exploit-roblox-pain-exist_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/cheat-download-for-hacking-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/pubg-uc-midasbuy-pakistan_GM1330123889.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/break-free-roblox-music-id_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/cheat-engine-roblox-mac_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/20-free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-vector-roblox-logo_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-free-hats_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/colossus-legends-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-hacking-roblox-tutorial_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3271 22868 bytes
SHA-256: a7852ce317b1fc37709143c2dd602997ae94f96280bb5a7c80a8576ee6ea1e46
font_01_sfnt_off000065cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65CF 18556 bytes
SHA-256: d4ca89d62dff2994f76510eecd1359da571a3d2194b84bf96e1985e5febce106

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