Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b180e8d95019b6…

MALICIOUS

PDF

49.0 KB Created: 2021-05-15 22:37:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ed5033f9d635bea2f81ff65a17e61779 SHA-1: 1b3e177c69bf72c15a9a850eac486511c9d30145 SHA-256: 70b180e8d95019b6a428cb29276adba1ca95fadd81f501637c01a832f386ad39
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of 'free Robux' and 'game hacks' to entice users into clicking a link. The primary link, https://netcdn.xyz/app/431946152/free-robux-no-download-game-hack, is identified as a high-risk redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to exploit user interest in gaming cheats to deliver a secondary payload or lead to a phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/431946152/free-robux-no-download-game-hack PDF link annotation
    • http://kancelaria-legnica.eu/images/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/how-to-get-free-spins-on-coin-master-android_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/mcpe-116_GM479516143.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/minecraft-tower-defense-hacked_GM479516143.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://kancelaria-legnica.eu/images/roblox-g_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_off00004a31.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A31 29580 bytes
SHA-256: 202463731be0cc306635ac227d149d8695333576fe77a415b9d5694dd1337bf4
font_01_sfnt_off00008e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E75 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009b86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B86 18824 bytes
SHA-256: a83584a15d83770571e134086905248a9fe783ccc3b424d06d308178a7ec7f42

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