Malicious PDF — malware analysis report

Static analysis result for SHA-256 1910fae1e401b0c1…

MALICIOUS

PDF

43.4 KB Created: 2021-06-14 02:01:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f0c66e1d363d6e2c88903f2c1c474b40 SHA-1: 4e4996ba8b5c613c9cb715cdc97c4fca86976536 SHA-256: 1910fae1e401b0c197556e5507863f9f22acc4d016af175758a546cc6f706724
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 0.9969

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-roblox-accounts-usernames-and-passwords-2021-game-hack PDF link annotation
    • https://perpustakaan.unitomo.ac.id/repository/roblox-frog-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-change-a-leaderboard-using-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-script-executer-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-free-games-without-downloading_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-put-in-hacking-scripts-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-do-you-speed-hack-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-titanic-free-radi-ov3rmillion_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-promo-codes-for-roblox-clote_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-play-roblox-bloxburg-for-free_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-easy-robux-cheat_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-kick-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-coins-on-assassin-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B9A 24296 bytes
SHA-256: 7b362191a6c568c5b5cae88aa58374b0fcf35ef692601bbb8aa32f45bc6ba3e2
font_01_sfnt_off000082d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D3 19760 bytes
SHA-256: bb92529063a1423f0536f099541fd9b41d8b9af09eb01f77df366bf1aa573fff

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