Malicious PDF — malware analysis report

Static analysis result for SHA-256 25a285d01afa4130…

MALICIOUS

PDF

43.0 KB Created: 2021-05-13 03:33:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 082178649c4ee0fdcff7cc261c2f5074 SHA-1: a19f4dd9ab9c47092dbea080031228347cf87bda SHA-256: 25a285d01afa41305395cbb5c002a2ed9b6c12a87fbc3d4f68926f6b79f1d640
160 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 https://netcdn.xyz/app/406889139/mcpe-master-coins-hack-game-hack, which is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to game hacks and URLs, reinforcing the lure. No scripts were extracted, but the embedded URLs and redirector behavior are strong indicators of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9630

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/406889139/mcpe-master-coins-hack-game-hack In PDF document text
    • http://gaec.cl/images/how-to-hack-coin-master-game-without-root_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/roblox-survey-for-robux_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://gaec.cl/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/free-spins-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/roblox-18_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • http://gaec.cl/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gaec.cl/images/how-to-get-free-robux-2021-no-human-verification_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_off00004610.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4610 24076 bytes
SHA-256: 6176608033b75aec0241a92322b5a358a73b7caecd203c4adfb29fbdf73884db
font_01_sfnt_off00007ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCB 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off0000867d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867D 17892 bytes
SHA-256: d01168f9bbbfe6455f8e766ddb511a9b706125e6492a8429ac9dad2f06419671

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