Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3258fd1841723e…

MALICIOUS

PDF

34.7 KB Created: 2021-07-01 16:19:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-19
MD5: a8b66971bd6601a5064cc8ad7fcc184d SHA-1: 4727d2afd0551d4675d9565dbabef3fa6d80bccf SHA-256: 4e3258fd1841723e07e6997f8782f8cb4c88f2a875226a9630486870a03797fe
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/479516143/free-minecraft-java-code-game-hack In PDF document text
    • https://adirp.id/upload_data/files/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-games-that-you-can-play-for-free_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-get-free-robux-free-item_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/jailbreak-script_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-rich-roblox-accounts-and-passwords-that-work_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/https-wwwfree-robux-at-http-rex-eu5org_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/can-we-hack-roblox-with-fe_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/get-free-robux-kesrer_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-spins-october-28-2021-coin-master_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://adirp.id/upload_data/files/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://adirp.id/upload_data/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E7 22900 bytes
SHA-256: e773fd300780390030306b5068318ddfdd648d79ed9772ff78f05e006e3f942d
font_01_sfnt_off0000644c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644C 18452 bytes
SHA-256: 5311ff163cb5fa31e0ff5346c8b8368b0c4116a432924275301f829a2985271a

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