Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a73d830c6af445…

MALICIOUS

PDF

34.9 KB Created: 2021-06-18 23:06:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0e464ad3dc900d1b798cbeee47a62771 SHA-1: d28e2c22cf4789f791c8b5699af36961adf44040 SHA-256: 94a73d830c6af4456577cc5d2a5a09b69f6b1ba438a24d12e332d50e08c7b5fc
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/roblox-hack-get-unlimited-robux-for-free-game-hack PDF link annotation
    • http://library.umuslim.ac.id/repository/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-game-free-download-for-pc_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-unlimited-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/haktuts-coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/poke-coins-pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-coin-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-free-download-for-chromebook_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-hack-2021_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_off0000308e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308E 22220 bytes
SHA-256: 586325b88a4bf1b1830b368c983ba62f76b5e7503346293754ddc8f289e2ceb8
font_01_sfnt_off000061f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61F0 19620 bytes
SHA-256: 7d7a6528bfe290d3afacf1e66215cd6b9b3a41bce547ac44bc296c2ca880e41c

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