Malicious PDF — malware analysis report

Static analysis result for SHA-256 c30973ec90bbe456…

MALICIOUS

PDF

34.8 KB Created: 2021-06-18 04:13:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 12eb8e3246a90d5a89c71f3837736fc2 SHA-1: ab3890d140c98ff3a17f2cc6fd298e8a9965151e SHA-256: c30973ec90bbe4561bfe4bf6e6a4711d21e8f17431a4e36b4385ac9f1b89e478
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector. The primary lure appears to be related to 'Roblox Admin Logo Hack' and 'free generator / game hack' content, aiming to trick users into clicking the malicious link. The document body, though partially corrupted, contains references to these lures and associated URLs, reinforcing the phishing and redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-admin-logo-hack-game-hack In PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-get-22-000-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-roblox-clothes-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-login-with-these-free-accounts_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-100-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-get-free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-roam-openworld-roblox-games_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-lumber-tycoon-2-spawn-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/is-there-actually-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/dinosaur-simulator-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/wwe-backpack-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-make-a-free-admin-game-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-printable-roblox-birthday-party-invitations_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-hack-arsenal_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/site-17-roblox-hack_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_off0000316f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316F 22084 bytes
SHA-256: 59f09d662d941ccfc1c223b4eabfe4298c9e99872f351518add0b0e030937b38
font_01_sfnt_off00006269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6269 19208 bytes
SHA-256: 35b6d5286fbbb8249d4dc0d81c3cfdf82fac06078cd447c76a5c34a264082c11

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