Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f6058ffaf23acf…

MALICIOUS

PDF

34.2 KB Created: 2021-06-30 12:57:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fda69fdbf28f032ff113cba36665d858 SHA-1: b4dd67816158895db00d5b3898e9f7e50f1b0e8a SHA-256: 98f6058ffaf23acf591610012345ce4534211873436bf8cc63c802c5e2e18bb6
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 generators' and 'game hacks' for popular games like Roblox. The ML classifier strongly flagged this PDF as malicious, and heuristic rules identified it as a redirector lure. The document body, though partially corrupted, contains similar URLs, reinforcing the malicious intent to lure users to potentially harmful 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.co/app/431946152/free-roblox-graphics-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-hack-prison-life-v2-0_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-spins-haktuts_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/hacks-of-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-free-followers-bot-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-hack-roblox-to-get-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-roblox-studio-command_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/best-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/blakberry-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-promo-codes-roblox-october-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/hack-para-roblox-2021-julio_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-robux-codes-without-builders-club_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EEA 22320 bytes
SHA-256: e164a76a1fed1393d6fedea043a18653b570093176dfa009436a0571ea82ece5
font_01_sfnt_off000060b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B7 19112 bytes
SHA-256: 0421b132af4ae5b522697f012d7ce41849f527735ca4e61044b31b417b95671f

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