Malicious PDF — malware analysis report

Static analysis result for SHA-256 4970ff4e42a64f4c…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 07:40:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ffaed46b1b54bf81e5adfd5967bcf7e4 SHA-1: 7f96a9bcf0fb185c608001b1fd9bfb95c19d07a6 SHA-256: 4970ff4e42a64f4c1b180db514ba3703ed18676ad1554e02ce0a5c24bd5fa51c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, specifically advertising a 'free Robux scam game hack'. The document body also contains the same lure and URL, indicating a social engineering attempt to trick users into visiting a malicious site. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/431946152/free-robux-scam-game-hack In PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-hack-mod-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-injector_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-hack-roblox-for-robux_GM431946152.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
stream_004_off00004f05.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F05 24728 bytes
SHA-256: bb723c666b65fea33fb7d510c71bdaa98ed2e03e0e733f7508969b380fd6bb5d
font_01_sfnt_off0000877e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x877E 18500 bytes
SHA-256: 24c52a02bd601b0a5cf869202747d5c16280e540771a7d3b3f68f33a5cbf68e3

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