Malicious PDF — malware analysis report

Static analysis result for SHA-256 177bf94a01580919…

MALICIOUS

PDF

35.3 KB Created: 2021-06-18 06:10:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f83d0dd0b21d4e4c25d893adc8423841 SHA-1: 0b2fa1292c7bde1b9446641486740a8cc08bebef SHA-256: 177bf94a015809191f9b6cb5d6e32e2a57e376b03aa1538d360b07e4ccb51183
160 Risk Score

Malware Insights

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

The PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.co/app/431946152/exploit-hack-roblox-download-game-hack. This redirector is associated with lures for game hacks and exploits, indicating a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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/exploit-hack-roblox-download-game-hack In PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/what-tiktok-free-views-hack_GM835599320.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/hack-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-peoples-passwords-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-roblox-jailbreak-private-servers_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/daily-free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-hack-without-download_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_off000030fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30FC 22520 bytes
SHA-256: 232c1a59ec40987268a897258e6919c2ff2664f21d0c284602d06a8649418dc9
font_01_sfnt_off00006322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6322 19564 bytes
SHA-256: 9b52c569d1462528fbb25688e9ac9496c4eeab6c6ccdeeb436f02ee0761f6c4b

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