Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f70423404abad3…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 09:47:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 002aaac56e3fb23e03267285f3ed0166 SHA-1: 5bc265a946e13c215129d0918ca4b078d06d4f35 SHA-256: d6f70423404abad33f9357d578d4b53b06e6e78eec35ea329e58869ae3cbdbc7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary link, http://netcdn.tw/app/431946152/how-to-get-free-robux-fast-game-hack, is associated with known malicious redirector activity. While no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or scam attempt designed to trick users into visiting malicious sites.

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.tw/app/431946152/how-to-get-free-robux-fast-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library/repository/cara-cheat-roblox-lumber-tycoon-2-money_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/cm-spins_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-robux-facilement-et-gratuit_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/denis-free-robux-code_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/hack-roblox-players_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-goku-clothes-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/infinite-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/cone-master_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-actually-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-get-roblox-veichle-simulator-hacks_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-free-clothes-website_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/boku-no-roblox-remastered-cheat-codes_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-mobile-hack-tool-download_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/cheat-engine-roblox-tycoon-2021_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-spins-2021_GM406889139.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_off00003056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3056 22588 bytes
SHA-256: 7ff6e78a09dd5b4a3d2cd68ee457a8032f349ada6257941f6b62742e44f4ce56
font_01_sfnt_off000062c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C3 18984 bytes
SHA-256: bed0a7dac96498375f4eaea59b570525fab5ec2b3fb3a823c1f5d212ca36b463

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