Malicious PDF — malware analysis report

Static analysis result for SHA-256 4bb3754c78485138…

MALICIOUS

PDF

35.3 KB Created: 2021-06-30 16:23:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d5e64db3e0ca15dcc69ea95c4206f5af SHA-1: d1bdacb47a2b4443b1372a488ee8195e1722144f SHA-256: 4bb3754c78485138870ed9645108bbea54dfde2670f7e873226a62d4b176d578
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'free generators' and 'game hacks' for popular games like Roblox. The primary lure URL is http://netcdn.co/app/431946152/slurp-roblox-hack-key-game-hack, which is designed to entice users into clicking through to potentially malicious sites. While no scripts were explicitly extracted, the nature of the links and the heuristic firings suggest a phishing or social engineering attack aimed at driving traffic to malware or scam pages.

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/slurp-roblox-hack-key-game-hack In PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/711-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-armor-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-printable-roblox-birthday-party-invites_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-online-roblox-obbies_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/cheat-list-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-promo-codes-for-roblox-robux2021_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/coin-master-coin-link_GM406889139.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/how-do-you-hack-free-robux-2021-on-pc_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/pubg-uc-official-price_GM1330123889.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/robux-for-kids_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-roebucks-com_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/free-sdcript-executer-for-roblox_GM431946152.pdfIn PDF document text
    • https://e-learning.man4pandeglang.sch.id/__statics/gudangsoal/files/roblox-toy-codes-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00003457.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3457 21928 bytes
SHA-256: 1bed9d8dd0dd5ebbfa5310fbb29eb5336f803f7faa243903739e94350c8ec832
font_01_sfnt_off000064a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A8 19152 bytes
SHA-256: 58a7d7b6fe82f6a487d77b64c8ec0d158b6b63fd587634c7bf6982d6c89caa59

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