Malicious PDF — malware analysis report

Static analysis result for SHA-256 58e2d1c7911cba70…

MALICIOUS

PDF

34.5 KB Created: 2021-06-26 07:28:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5f59308fc6071710a121390d87245b8f SHA-1: 712930f3559f5e95faf5c0b1c9a758009cff063f SHA-256: 58e2d1c7911cba700cf725e75fa3a5481b82cc2820a13681681ac59740feefba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, one of which is identified as a malicious redirector. The document body and heuristics indicate a lure for 'game hacks' or 'generators', suggesting a social engineering tactic to trick users into downloading potentially harmful files. The presence of embedded URLs and the nature of the lures strongly suggest an attempt to deliver a second-stage payload.

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/robux-hack-proven-pc-game-hack In PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-robux-easy-for-kids-fornoobs_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/get-5-free-robux-just-for-signing-up_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/counter-blox-roblox-offensive-hack-noclip_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/roblox-id-code-for-cheats-for-hoes_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/free-roblox-accounts-2021-october_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id/repository/how-to-get-free-robux-without-verifying-anything_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-generator-codes_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://repository.ummy.ac.id//repository/free-spins-and-coins-coin-master_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_off0000303d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303D 22352 bytes
SHA-256: bfde208529b10c9e553bc343e71cf5ed8c5f36a492cf877f83a5f5bc26db27e0
font_01_sfnt_off000061c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C1 18992 bytes
SHA-256: 2f575b9ecddfe34d8bd7943a77c5abc418b80d1de4eb269593539f3429abf73a

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