Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1c27388027510c6…

MALICIOUS

PDF

47.0 KB Created: 2021-05-10 14:02:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f82c959934bde435bafa811f515c839e SHA-1: 181e08a53a15d869f3c3f4c34f8fc7784c61ae94 SHA-256: b1c27388027510c659db1e33de37ce7717ad8cf27537179520fc8acdcf9b5f3b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, with a primary focus on 'game hacks' and 'free currency' lures. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a malicious intent to redirect users to potentially harmful sites. While no scripts were directly extracted, the embedded URLs suggest a phishing or scamming attempt, likely to deliver a second-stage payload or collect user credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/coin-master-daily-free-spins-blogspot-game-hack PDF link annotation
    • http://libsmpn1balongpo.sch.id//repository/robux-online_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-app_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-hack-pc-free_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/free-robux-pin-codes_GM431946152.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://libsmpn1balongpo.sch.id//repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d35.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D35 26220 bytes
SHA-256: 3f9757688831ce079125b1f133884c9bec4b1bad99a9ed3b8aeaa319e260ed80
font_01_sfnt_off000089b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B2 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off000093cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93CC 18812 bytes
SHA-256: 99efaab321cd8bd4771148dad361c5d136942e4fae15d22f58752892cb19a04e

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