Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a811e08907e9ccf…

MALICIOUS

PDF

41.9 KB Created: 2021-05-14 19:07:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0a622f5cdbfddf366f0de9509e84c6d6 SHA-1: ac049dd4d9ab2c0a39014daafb89846b33c38b30 SHA-256: 5a811e08907e9ccf631559185a1f1d34397219b027ffdff6d6e9e50244b4d8a8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple external links, with a primary URL identified as a lure for game hacks and free spins. This suggests a social engineering tactic to redirect users to potentially malicious websites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or scam attempt, likely serving as a first-stage lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-spin-ml-link-game-hack PDF link annotation
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/archery-master-3d-apk-and-mod-free-download-unlimited-coins_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/robux-survey_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://e.mtsn4tabalong.sch.id/__statics/gudangsoal/files/how-can-i-get-free-spins-on-coin-master_GM406889139.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_off00004966.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4966 24836 bytes
SHA-256: 8d47f6f8f491ff7990053cdb573ad7a730582b3edf08b12e4bbf555557624953
font_01_sfnt_off0000823f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x823F 17968 bytes
SHA-256: 1ea15ab14cfacca10647eaa7b498244bedd2cc0f2a90ac180f194b2e1ff76db6

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