Malicious PDF — malware analysis report

Static analysis result for SHA-256 64ac9b7ac2676d6c…

MALICIOUS

PDF

45.6 KB Created: 2021-06-10 17:56:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8264d9ac62899dee558bfb06c6902acf SHA-1: 46d6edd0de1c5b5a712c6562f485217423724527 SHA-256: 64ac9b7ac2676d6cc49079e7a68fed763d2d25adc839ec11d3c0bd7c755dfd0b
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 0.9864

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.tw/app/431946152/roblox-free-robux-20210-game-hack PDF link annotation
    • http://mtsn-baranti.com/perpus/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/pubg-uc-dundle_GM1330123889.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-a-free-bugatti-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-robux-on-roblox-on-tablet_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/free-minecraft-maps_GM479516143.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://mtsn-baranti.com/perpus/repository/minecraft-pocket-edition-free-ios_GM479516143.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_004_off00004fa8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FA8 27276 bytes
SHA-256: 160a32e2645faf2879fa50bcbdca16d9e05d950629a900505224d372d464ee5e
font_01_sfnt_off00008ee6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE6 18488 bytes
SHA-256: a3208fce9527d2278c234a1a61d28fcd25fb7af8e8cbd61a3e8613f4dc1586fb

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