Malicious PDF — malware analysis report

Static analysis result for SHA-256 79af199448a9d79c…

MALICIOUS

PDF

49.3 KB Created: 2021-05-11 21:30:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6556a4c5cfc2a1be2710e3457851a07d SHA-1: 19d3e18373a13e41461ab67a5136e60d432ced86 SHA-256: 79af199448a9d79c34a91d74928ea37125e13097a75f422ef06f48e8baca93ad
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/daily-coin-master-game-hack PDF link annotation
    • http://www.homesweethome.pl/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/hack-master-coin-pc_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/krnl-download_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/wurst-client_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/will-minecraft-ever-be-free_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/robux-converter_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048a6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A6 24352 bytes
SHA-256: ee1d09cb0275c9cd370bfa9e4dadf2e28a17033c786d9d4cbd62fa3b65f7eb14
font_01_sfnt_off00008061.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8061 2920 bytes
SHA-256: 601c50867a41b9362538ff18e5f9479a0f9badf698aaf1eb7e88469c11719db7
font_02_sfnt_off00008a75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A75 8676 bytes
SHA-256: e06aca5f85e50ae6cefda302c5299c18ab6d27c174f74f0bb0ee8efa7ccb4468
font_03_sfnt_off00009f00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F00 17968 bytes
SHA-256: 88a0d731d7b381574a006ca944c17241aad840c2b11367d7b1a0c0a64bb163ce

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