Malicious PDF — malware analysis report

Static analysis result for SHA-256 627af3e5e3dbfc9f…

MALICIOUS

PDF

48.7 KB Created: 2021-05-16 15:06:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7107a5c7ee69100a927a929271354ab0 SHA-1: 7418b29923b528decb347aa39f450101febc8ce4 SHA-256: 627af3e5e3dbfc9f2fa4ae1ca76677a6cab2a8bb0e5e1ee6093afd7b50eff603
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The document body and embedded URLs suggest a phishing attempt to lure users to potentially malicious websites. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate malicious redirection and potential for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/watch-videos-for-robux-game-hack In PDF document text
    • https://www.stadtbesichtigungen.de/images/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-mster-free_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/how-to-o-get-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/hack-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.stadtbesichtigungen.de/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c49.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C49 28180 bytes
SHA-256: 131ac037633d58df948227f5433d9fec67e5354e5d1b69f037dd8a3491e581d4
font_01_sfnt_off00008d01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D01 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000099a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99A8 19140 bytes
SHA-256: 301f4b72018bde41591ea9383aea6da8578dd4e8b92e993503a568e91431ca36

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