Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1a30605e669b97d…

MALICIOUS

PDF

45.2 KB Created: 2021-05-10 21:58:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ee2f3f8b4a56686c2ffe3c8e1e180df2 SHA-1: 16f299031876a017c06c2e45813165222a34cc80 SHA-256: b1a30605e669b97dc1b09d28b535d7167e2dea708cc300a4dcdfe3a1ec63c638
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/479516143/xray-hack-game-hack PDF link annotation
    • http://technologicalsc.com/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-free-coins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/how-to-get-free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/oprewards-login_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-hack-tuts_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://technologicalsc.com/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a4f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4F 25692 bytes
SHA-256: 4ddfb62c1cc82111cb4201c075c5352133b58b7194e5f03412bbc2c96ba8ef4e
font_01_sfnt_off000084e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E1 3056 bytes
SHA-256: dd24a0ab94df4552e459bd06fd01b0fd3f021c1d51d1d64407070e735974a028
font_02_sfnt_off00008f53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F53 17924 bytes
SHA-256: 1c18314a45b67d8e0407c0afa106d646ac70c295a93447c5e43702f3b52b964b

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