Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3be9e8bbc4e3402…

MALICIOUS

PDF

33.7 KB Created: 2021-06-29 01:36:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f504a9f329d9436c643d45d191344843 SHA-1: 4e3f76baf41de88212682e946e116da139ec0e17 SHA-256: f3be9e8bbc4e34025c35c244ca8d3ed31edc3013395b92025c14177bb0c29a66
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 0.9980

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/free-robux-game-for-real-game-hack PDF link annotation
    • http://library.unissula.ac.id/fe/repository/robux-redeem_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-speed-hack-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-hax_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hack-all-game-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/como-psar-el-bosque-roblox-free-pokemon-brick-bronze-beta_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/como-hackear-coin-master-2021_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_off00002d68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D68 22156 bytes
SHA-256: 6cdcd90112c2ff6a6f5f0a83d827a53bff63941013da5baed918a187ddb0ec33
font_01_sfnt_off00005ea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA9 19052 bytes
SHA-256: afa7005905f5bae5fa6979e09aca6ad15d6fca431c2199d8524b6d7ce92c582f

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