Malicious PDF — malware analysis report

Static analysis result for SHA-256 baa772a5d2b44b80…

MALICIOUS

PDF

42.2 KB Created: 2021-05-14 07:36:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9b35ebbcb184db35a1c61dc36f85b7df SHA-1: a742f7c77cc19547ab563baadf1025cab3ba738b SHA-256: baa772a5d2b44b80af112d049c8a3f101cd0ca1f70a596b3f9aa750baedf907c
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 0.9971

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/479516143/how-to-play-minecraft-for-free-game-hack PDF link annotation
    • https://dirigentigiustizia.it/images/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-hack-a-minecraft-account_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-free-robux-games_GM431946152.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_off00004ad3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD3 24860 bytes
SHA-256: e89c585b53fb2bed66570e3335a330ccad6860f6748458e4cc3af10a4705e672
font_01_sfnt_off000082b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B7 18284 bytes
SHA-256: 30e565cae926cf2505d0f64cbbb860d09a66a84df24e80d913481d9233f56de2

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