Malicious PDF — malware analysis report

Static analysis result for SHA-256 affca8271b7ede28…

MALICIOUS

PDF

34.0 KB Created: 2021-06-25 10:08:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1eefc46abeafaf0ddf9c75f950459404 SHA-1: ac13b3133e64bd67d9d1ef7f5a441b7da4fa0f3b SHA-256: affca8271b7ede2801f1fd900960d543575ee35127ef99ecb3422f73e0aab5ec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free generators' for popular games. The primary malicious URL identified is http://netcdn.co/app/431946152/roblox-hack-robux-apk-game-hack, which is flagged as a known malicious redirector. The document body and embedded URLs strongly suggest a lure to download potentially unwanted or malicious software disguised as game cheats.

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/roblox-hack-robux-apk-game-hack In PDF document text
    • http://pustaka.pn-calang.go.id/repository/shirt-ash-on-roblox-free-on-shirt-free-on-shop_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-program_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/how-to-hack-anyones-roblox-acount_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-parkour-script-hack_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/robux-free-co_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-candy-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-download-free-chrome_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/all-free-items-in-roblox_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_off00002e7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7E 22272 bytes
SHA-256: 06af6d41f2a51ed83aae5528d293fff443e421d8d415148bc64e498b4ab07284
font_01_sfnt_off00006013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6013 18972 bytes
SHA-256: dcf01e0ba34edf9a0745f287cdd121aad96956f9b161c4ef798df5b843caaa8e

Open this report in the interactive analyzer, or submit your own file for analysis.