Malicious PDF — malware analysis report

Static analysis result for SHA-256 626868ce12617cc4…

MALICIOUS

PDF

46.3 KB Created: 2021-06-04 04:37:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8f7121346b9be0bfce38a4909e1d461b SHA-1: 65c8996245e496b2b975bba892ffee391a094e49 SHA-256: 626868ce12617cc464dfa0be7b0ee2434e6cf0498f974dc4a743817357d46305
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and a visual download button, strongly suggesting an attempt to trick the user into downloading a secondary payload. The ML classifier also flagged this PDF as malicious with high confidence. The primary URL identified is https://netcdn.online/app/431946152/www-robux-us-game-hack, which likely hosts the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/www-robux-us-game-hack In PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/minecraft-apk-114_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/roblox-sued_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/pokemon-go-free-nickname_GM1094591345.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/androeed-ru-minecraft_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stieppi.ac.id/repository/pubg-uc-770_GM1330123889.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_off0000548e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x548E 27240 bytes
SHA-256: 1f6faa7af4a41ff1cf22358f9a38d31198a4adcb681726d07e242acdd2042a91
font_01_sfnt_off00009210.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9210 18396 bytes
SHA-256: 4c9ea76a60f642c5a6e903a615e24166436faf8ac63ffb5558478067c155318c

Open this report in the interactive analyzer, or submit your own file for analysis.