Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f5e862d556c25b5…

MALICIOUS

PDF

35.7 KB Created: 2021-07-01 10:16:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: bb525b05f2e15d043a737285e3a51fec SHA-1: aa3b769a54e1c337031edb775079a286cdf6ad98 SHA-256: 2f5e862d556c25b5dd3ddbc506bc4e2a8c3cde592015e2eed9fcc4685d34e2f1
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/cheat-engine-hack-in-roblox-high-school-game-hack PDF link annotation
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/bleach-primera-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/pastebin-roblox-free-gamepass_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/lina-roblox-me-hackean-la-cuenta_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-redeem_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-quick-and-easily_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/noto-clip-hackes-roblox_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-easy-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-on-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-2-get-free-pants-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-promise_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/comment-etre-un-hacker-sur-roblox-francais_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_002_off00003155.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3155 23524 bytes
SHA-256: f83ac6a3bd2fe6ba8a3b26b7b5f89647467d4895bf225120b20304b1564d7936
font_01_sfnt_off00006685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6685 19044 bytes
SHA-256: 00ad46503c9ce75b9b7f04dfa9d27e026b51489e08e0ef1733a2de5e2cd007c6

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