Malicious PDF — malware analysis report

Static analysis result for SHA-256 62489b5ed4794351…

MALICIOUS

PDF

34.8 KB Created: 2021-06-30 19:42:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: aa2afcc151a76bc2cbb409266595427d SHA-1: c0c923f41465897d61b7960536c668d2a25ae377 SHA-256: 62489b5ed47943516f6a7a2384fa604ae4a2f45f9c0788c17a4c1523ae8b84ac
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The document body and extracted URLs strongly suggest a social engineering tactic to trick users into visiting potentially harmful websites. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures indicate a high likelihood of redirecting users to malicious content or phishing pages.

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/hack-roblox-vehicle-simulator-2021-game-hack In PDF document text
    • http://pustaka.ust.ac.id/repository/robuxian-free-robux-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-digimon-aurity-level-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-wall-design-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/prison-life-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-app-no-password_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-vido_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/green-scarfs-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-get-free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/guess-that-song-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/minecraft-net-free_GM479516143.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_off00002f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F71 22180 bytes
SHA-256: 3d08641f4ad13867c1e39bbad4c7b199d9c71b14c31446f916782f72bdebded5
font_01_sfnt_off00006043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6043 19980 bytes
SHA-256: d0ca8377597da051dd5a5f3506b71f73121c3a89aae253b6f560bed70d23ca9e

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