Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9f449fb31c88eb7…

MALICIOUS

PDF

45.6 KB Created: 2021-05-20 02:57:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3e0230be4ac9477acedfeed9c3803dae SHA-1: 342fdfff95086937621bfcf04b6d5706a9671ac2 SHA-256: a9f449fb31c88eb744de24d11f638c7a8b6cdc8b9bd7fa6d3391773fde7e7793
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded links, with a primary URL identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to game hacks and free generators, aligning with social engineering tactics. The presence of a malicious redirector indicates an attempt to lead the user to a potentially harmful site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/479516143/how-to-get-minecraft-java-for-free-game-hack In PDF document text
    • https://www.mb-alati.hr/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://mb-alati.hr/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • https://www.mb-alati.hr/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • https://www.mb-alati.hr/files/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/robux-game-com_GM431946152.pdfIn PDF document text
    • https://www.mb-alati.hr/files/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/get-free-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://www.mb-alati.hr/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.mb-alati.hr/files/oprewards-points-generator_GM431946152.pdfIn PDF document text
    • http://mb-alati.hr/files/coin-drop-master-free_GM406889139.pdfIn PDF document text
    • http://mb-alati.hr/files/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • https://www.mb-alati.hr/files/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • https://freegiftcodes.euIn 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_off00004b0f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B0F 27280 bytes
SHA-256: 1836a5b5a06020ffc525f299103bdaf0b29ba206adcbc544c3fa71ef0191af96
font_01_sfnt_off00008658.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8658 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off00009017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9017 18152 bytes
SHA-256: f45ec97da20a8e70f6e7437c3ced33d3bcbd99aef5af4daf3be0ff08d51a9e58

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