Malicious PDF — malware analysis report

Static analysis result for SHA-256 27dda956551d5d7a…

MALICIOUS

PDF

51.1 KB Created: 2021-05-19 06:27:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6c69454675cec74b95e9326f9485f597 SHA-1: 1d726bb90c3cfcaba0e391af2579d72b564ee7b9 SHA-256: 27dda956551d5d7aeaa86e67709c4a319d573c70907f35d516d24ecc7ce5ee22
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that lead to known malicious redirectors and game hack lures, aiming to trick users into visiting potentially harmful sites. The document body and embedded links suggest a social engineering tactic focused on free game items or hacks. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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/how-to-change-roblox-username-for-free-game-hack In PDF document text
    • http://rafaelmontesinos.com/images/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/coin-master-hack-2021-link_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/10-robux_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://rafaelmontesinos.com/images/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c43.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C43 25796 bytes
SHA-256: 1e6195355a88bdb9b69a194b57c9975e41a8f809718152b6840120d0092a7679
font_01_sfnt_off00008895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8895 2872 bytes
SHA-256: 5a38050e56bfed6ba013c4835499ae05f4b57b22e606c9172dd4bc2ae7fd1207
font_02_sfnt_off0000924b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x924B 6636 bytes
SHA-256: 62075f0fe13502d46afb6e55e83d440c29ef4988399537df1f86e7653ce3b744
font_03_sfnt_off0000a257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA257 19240 bytes
SHA-256: 61006e5f3dddd6435ab0a2755610421e2f864d25a13f3f522a83b1d149be9d74

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