Malicious PDF — malware analysis report

Static analysis result for SHA-256 b528b897bdb05217…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 19:10:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c9d765b893f84cf634c002c15834b43 SHA-1: 2f5c4d4452f8097ee85abb14b75bbf1da0b5e083 SHA-256: b528b897bdb05217ad35be2673ea9c1ae5a472f9911af2f1cadcdb0dc53a6806
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to game hack generators and other potentially malicious content, as indicated by the PDF_GAME_HACK_REDIRECT_LURE and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The ML classifier also strongly flagged this PDF as malicious. The document body and embedded links suggest a lure for popular games to entice users to click through to potentially harmful sites.

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.tw/app/479516143/minecraft-free-edition-game-hack In PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-free-emotes-list_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/hack-roblox-btools_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-system_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/young-wild-and-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/pubg-uc-kr_GM1330123889.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-bl4z3gamesco_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-discount_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-app_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/snack-factory-tycoon-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-dll-hack-injector_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-legends-of-speed-hack-script-pastebin_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_off0000300f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300F 22176 bytes
SHA-256: cf5eeb9e01eb034a3fd7cec06a733f4e21f228e67e2fb14ea4585a57c3839983
font_01_sfnt_off00006104.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6104 18172 bytes
SHA-256: db192e3ee1b597e90d8ba86701c1d854579a97db55fa1bd01759e1179bda7501

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