Malicious PDF — malware analysis report

Static analysis result for SHA-256 48907d2a0092666b…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 18:45:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8e1480738887a2ef999b7200da15ae91 SHA-1: 04190c33cfbf4b1e58fa7f914d1e601a26bc65f7 SHA-256: 48907d2a0092666bde9614cd77397459bfa0f03999edfe7845f36dbf867715a0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it links to external websites, specifically a 'free generator / game hack' lure. The document body, though heavily obfuscated, contains references to 'Free Coin Master Credit' and a URL that aligns with the heuristic findings. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a social engineering tactic to redirect users to potentially malicious sites, likely for credential harvesting or further malware delivery.

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/free-coin-master-credit-game-hack PDF link annotation
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/roblox-e-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-robux-place_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1pringsewu.sch.id/__statics/gudangsoal/files/free-promo-codes-roblox_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d48.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D48 26100 bytes
SHA-256: d80df15bfeb92b4cb381eb184af536b96be36331e6202d7180747286def20316
font_01_sfnt_off0000897d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x897D 17884 bytes
SHA-256: 34dd8c80f69d0f68a5b5993274c8f1bdeef3254478921523cc39dd8566b84a5f

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