Malicious PDF — malware analysis report

Static analysis result for SHA-256 581b1ab512d4fd32…

MALICIOUS

PDF

34.6 KB Created: 2021-06-24 03:28:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 166614de3cb70287d815beb9ad31ac8d SHA-1: bcc0dbfa5b37227942d10af4c52f5791cb462394 SHA-256: 581b1ab512d4fd32d2f6c60fa6ae5b3ea0da2a676223c700670a664227b2c40b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the embedded URLs suggest a phishing or scam attempt. No scripts were extracted, but the document's structure and content point towards a social engineering tactic to redirect users to potentially harmful sites.

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.co/app/431946152/how-do-i-earn-robux-game-hack PDF link annotation
    • https://mtsn4blitar.online/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/rape-simulator_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/free-roblox-codes_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/como-hackear-ropa-en-roblox-2021_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/pig-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/coin-master-hack-mod-apk-35-8_GM406889139.pdfIn PDF document text
    • https://mtsn4blitar.online/__statics/gudangsoal/files/haktuts-coin-master-free-spins_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
font_00_sfnt_off000030dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DD 22372 bytes
SHA-256: e04494d5a328a1741d50f3210f8adf74d631c66f11d5a2bf19e9c9ae1db0e8c7
font_01_sfnt_off000062ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AC 18884 bytes
SHA-256: 0a8d7a379d75a74d52be7bd4216aad0700edb3e310f87c33ee417f3335b78a59