Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3a622cbb6817a5…

MALICIOUS

PDF

44.1 KB Created: 2021-05-18 00:40:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ac2638ae51702bc1e7cebec77d505df7 SHA-1: c5dd2ae64b25aab3e269c5f2a1d792ac877c49f3 SHA-256: 6e3a622cbb6817a544cf4286c6b3bc727a4a870d0be566b2777f183c9ea746df
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. The document body, though heavily obfuscated, contains embedded URLs that reinforce this theme, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the presence of external URIs and the nature of the lure indicate a likely attempt to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/coinmasterdailyfreespins-com-game-hack PDF link annotation
    • http://reisebild.eu/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/minecraft-xbox-360-free_GM479516143.pdfIn PDF document text
    • http://reisebild.eu/images/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/coin-master-free-items_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/coin-master-daily-rewards-link_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://reisebild.eu/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://reisebild.eu/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://reisebild.eu/images/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://reisebild.eu/images/roblox-free-pets_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000467d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x467D 24692 bytes
SHA-256: 8f853e347c33c12bb252a7f237f574a03fb35aceaacb9ac38ae26908be81818a
font_01_sfnt_off00007f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F4F 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off0000893a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x893A 18412 bytes
SHA-256: e2599cc8a892eefc31c10bac6f2183dab570b4c76225f1f1bdeb83a3d04eb4f4

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