Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fbaf48d37d6b832…

MALICIOUS

PDF

32.9 KB Created: 2021-07-09 08:28:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6a0766543e8fede298c89fa1c9f74775 SHA-1: 91f32368bebe0a67239a5fe6f0552cdbed8fc33d SHA-256: 9fbaf48d37d6b8321d67291f7304e50b261dcdd2b99616d5541f19f579d3b474
154 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 generators. The primary lure URL is http://netcdn.tw/app/431946152/hacks-on-roblox-2021-game-hack, which is flagged as a malicious redirector. The document body and embedded links strongly suggest a phishing or scam attempt to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/431946152/hacks-on-roblox-2021-game-hack In PDF document text
    • http://zagi.hr/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/dolphin-hacks-roblox-website_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/free-roblox-printables_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://zagi.hr/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/roblox-wall-hack-script_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://zagi.hr/files/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://zagi.hr/files/free-inferno-box-in-miners-heaven-roblox_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/hack-of-robux_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/free-communism-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://zagi.hr/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.zagi.hr/files/twisted-murderer-roblox-level-hack-with-nopde-engine_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • https://www.zagi.hr/files/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • https://www.zagi.hr/files/how-to-hack-roblox-jailbreak_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_off00002b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B7B 22492 bytes
SHA-256: ea30e3df1a8674365721ccbd8f34794cc5a2d0593debdad285fdbaa2c4cc5207
font_01_sfnt_off00005db4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB4 19056 bytes
SHA-256: 704793cbd57e1dedd2caddb8bcfd4478d1b4972cb0a3a11e1203d9621b0effce

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