Malicious PDF — malware analysis report

Static analysis result for SHA-256 3aa9c5ffa186f15a…

MALICIOUS

PDF

42.8 KB Created: 2021-05-13 17:36:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 885efcef454cf68dfcb3936dd6bd0452 SHA-1: 64c198ad9e7b0ea3357332bd1a3baf42b65bd9b3 SHA-256: 3aa9c5ffa186f15af9f781c61aecbf0ed5394fb6245c5cd962dbbeaf738bf95f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an external URI pointing to a suspicious domain, likely intended to host a malicious payload. The ML classifier also flagged this PDF with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the document's deceptive content suggest it is part of a phishing or malware distribution scheme, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/free-roblox-intros-game-hack In PDF document text
    • http://waldkindergarten-abensberg.de/images/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/coin-master-official-website_GM406889139.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://waldkindergarten-abensberg.de/images/free-face-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
stream_003_off000049f8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F8 26016 bytes
SHA-256: 20d0b903353304ad7098452f5f53b18a34b27cfa4e39e0df7f5f2189bbdbfb9e
font_01_sfnt_off0000856e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856E 18052 bytes
SHA-256: 96373f35ee075c3be11c8e4c64eb77f13cb7d9769cc235bfbcc2c5e9d23a424f

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