Malicious PDF — malware analysis report

Static analysis result for SHA-256 2382e5ff92399b3f…

MALICIOUS

PDF

33.1 KB Created: 2021-07-01 17:37:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: ead32cfe03265f9d5c4fad235338f093 SHA-1: 30fb59af62d9a2badaff262b05db3fe6bd463f2e SHA-256: 2382e5ff92399b3f110526c5a8b43494e0054f133a5276d000a2110a54a614c8
220 Risk Score

Malware Insights

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

This PDF document employs a lure of free game hacks and robux to trick users into clicking malicious links. The document contains numerous links to SEO link farms and a known malicious redirector infrastructure, suggesting an attempt to drive traffic to potentially harmful sites. While no scripts were extracted, the PDF structure and embedded links strongly indicate a phishing or scam attempt, likely leveraging a client-side exploit or redirect chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/best-free-roblox-games-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-in-games-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/robux-hack-download-roblox-minecraft-windows-10_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-legit-working-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hack-jailbreak-pc-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cool-clothes-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-and-tickets_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-love-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-twisted-murderer-mvp-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-games-for-free-for-kids_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/get-free-admin-commands-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cheat-engine-fonctionne-sur-quel-jeu-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-2021-without-human_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
font_00_sfnt_off00002a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A85 22536 bytes
SHA-256: 18c41ae9b76fa1f4501d3d07fb6117a5be6a62c3d39223486964cd2e222b430a
font_01_sfnt_off00005cb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB2 19016 bytes
SHA-256: b2fb01825fe257b180f48e58ac79efa44fa284c9086f363695b4028f24aa9d31

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