Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e57f0483437db24…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 13:40:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 937de2e4e53d637b19a289bebc566ae5 SHA-1: bd7dabdc1f68525161947e2ffb0fc4f127948ec1 SHA-256: 7e57f0483437db2425519196bc8a10e594f0a114a74bcacee59493cd76d1645e
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.tw/app/431946152/how-do-i-get-free-robux-for-roblox-game-hack PDF link annotation
    • https://digilib.stimlog.ac.id/repository/roblox-robux-generator-free-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/mining-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/robux-codes-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/create-vip-server-roblox-free_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/cmo-hackear-el-roblox-para-tener-robux-en-un-mvil_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-free-items-event_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/pubg-uc-or-pc_GM1330123889.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/roblox-cheats-to-get-robux-and-tix_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/roblox-flood-escape-2-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/free-robux-tampermonkey_GM431946152.pdfIn PDF document text
    • http://digilib.stimlog.ac.id/repository/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stimlog.ac.id/repository/minecraft-bedrock-edition-free_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
font_00_sfnt_off00002f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7D 22096 bytes
SHA-256: a16007689ad74f715b551e9a36ab159fb2105d97258c7c5467a16e0344c67428
font_01_sfnt_off00006026.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6026 19228 bytes
SHA-256: 65aeb187f793184c09dd9751a53cb4483d606e384a0e7928dbbf5d7852992517

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