Malicious PDF — malware analysis report

Static analysis result for SHA-256 e280a9c5c09ad58b…

MALICIOUS

PDF

53.6 KB Created: 2021-06-09 10:58:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fd98377765e8a83ea57b35d64b18ae1e SHA-1: 74796c0450dda156b428cf7f16d57fe94befb5f1 SHA-256: e280a9c5c09ad58b5d67e386ddefcd1e6850be563bfc2bb68463f6ff2e3d5ac7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for 'free Robux' and links to a known malicious redirector. The document body and heuristics indicate a social engineering tactic to trick users into visiting a URL that likely serves further malicious content or downloads. No scripts were extracted, but the presence of embedded URLs and the nature of the lure strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9636

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 https://netcdn.tw/app/431946152/free-robux-no-download-verification-or-survey-game-hack In PDF document text
    • https://scraperite.com/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • https://scraperite.com/images/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/roblox-cheats-for-operation-scorpion_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/free-games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/robux-in_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/robux-free-com_GM431946152.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://scraperite.com/images/spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://scraperite.com/images/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://scraperite.com/images/www-robux-com_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5173 27372 bytes
SHA-256: 7fa2f4386fda418e3a79f3872724d87d4406b6b09ba71eb0cf4a6bf17cc44475
font_01_sfnt_off000090a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A5 8132 bytes
SHA-256: e6d68e720ea5acf9dccbf7ffde18db6f65c62a99ab7725aa43e30329033a7787
font_02_sfnt_off0000ab91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB91 19472 bytes
SHA-256: a0149bf5f10a6a39d3b3d5639aa0a2822067acdfdbca639e8d96ca96c81eec01

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