Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ebb280ed8040dde…

MALICIOUS

PDF

34.0 KB Created: 2021-06-29 13:49:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9f9bf9436d80869072500311dd83a49e SHA-1: 65026a765c3084eaa479db91fbba6f6fb908ab7a SHA-256: 4ebb280ed8040dde8c0c17c86b9093bafc120b1aac704a0cb43ff42eb5a52a8c
160 Risk Score

Malware Insights

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

The PDF file contains multiple links to a domain known for malicious redirectors, specifically advertising game hacks and generators. The document body and heuristics confirm the intent is to lure users to click these links, likely leading to further malicious content or downloads. The ML classifier also strongly indicated maliciousness.

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/how-to-hack-roblox-bloxawards-game-hack In PDF document text
    • http://digilib.stiki.ac.id/repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-tiradas-gratis-link_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/claim-your-free-roblox-card_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-black-widow-sword-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/el-mejor-video-de-hack-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/the-conquerors-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-roblox-templates_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/pokemon-go-free-download-apk_GM1094591345.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-hack-download_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/can-you-get-in-trouble-hacking-an-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/scaffold-minecraft-hack_GM479516143.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
font_00_sfnt_off00002ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA4 22188 bytes
SHA-256: ea072396be3b11a02faa5ffeaede68aeddd32f050264c9babc2dc541777fa693
font_01_sfnt_off00005fe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE2 18996 bytes
SHA-256: a781df6363925d9c491bb7b0323b3e01f8b62fc04fcc00e324199fae75ae5c82

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