Malicious PDF — malware analysis report

Static analysis result for SHA-256 a49dbee82be07ae6…

MALICIOUS

PDF

33.9 KB Created: 2021-06-26 13:24:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 30a8552ce7af81caa5b90accc85cd663 SHA-1: 3e42fc83d291c387701a22d3e5f994b0355a846d SHA-256: a49dbee82be07ae617471d81370cf936e2783c690f6b8659e3c713fd3e716f80
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 0.9980

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/how-to-hack-roblox-passwords-game-hack PDF link annotation
    • http://elibrary.smknesbu.sch.id/repository/roblox-666-hack-download_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-granny-hacks_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-roblox-game-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/put-cheat-codes-roblox-bubblegum_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/2021202168-roblox-code-hack_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-girl-clothing-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/buy-free-robux-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-roblox-exp_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/roblox-cheat-codes-iphone_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-generator_GM406889139.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-online_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/get-me-free-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/how-to-hack-jailbreak-roblox-mac_GM431946152.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • http://elibrary.smknesbu.sch.id/repository/www-free-robux-com_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_off00002ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDB 22248 bytes
SHA-256: ab7e22f02ba57f50d1e2e37699e0ce4a2c10bfa2dc49e441188ee179100063af
font_01_sfnt_off00005f19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F19 19148 bytes
SHA-256: 27c2480528306c14fc73cab21edc43c1c48bdb6a9d52717524bf8f54e0cb401c

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