Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f37dba3e62ef06…

MALICIOUS

PDF

44.0 KB Created: 2021-05-16 15:31:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dc0309b40928b4d9b185c52849bf3419 SHA-1: ada82b1769d2cf94a90c9f58e72abcd600c53454 SHA-256: d2f37dba3e62ef06e76895d9bf9fdc346bfb16fa091e74e1d056fff52ce8ae92
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a URL advertising a "game hack" and "free generator". The ML classifier strongly flagged this PDF as malicious, and the presence of multiple game-related lures suggests a social engineering attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the primary attack vector appears to be a phishing lure via a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-game-hack-link-game-hack PDF link annotation
    • https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/robux-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-android_GM479516143.pdfIn PDF document text
    • https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn2pringsewu.sch.id/__statics/gudangsoal/files/how-do-you-download-minecraft-for-free_GM479516143.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
stream_003_off0000505e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505E 25892 bytes
SHA-256: a17622d4c4b6e9ee0dd6999871c247a2405f031101377ef87bf8060bbdd72293
font_01_sfnt_off00008a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A97 17976 bytes
SHA-256: 4c1d26c1fb4feed8092d99a8761960172faa49b0c213e7324f16c91828cd6f14

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