Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6dcd38cb213bb23…

MALICIOUS

PDF

44.7 KB Created: 2021-05-12 11:03:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 2940d3e89ca7d11b423144d9367c99ce SHA-1: 8b9fd734b2d26a17387ca017360c833eaa65b573 SHA-256: a6dcd38cb213bb237faf288c27dd7731a9b29cfb1650e69220f8cdb5c5e0295f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generator / game hack' lures. The document body, though partially corrupted, contains text related to 'free Robux' and a URL that matches the malicious redirector. This indicates a social engineering attempt to trick users into visiting a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/you-promised-my-son-free-robux-game-hack In PDF document text
    • http://www.guidaturisticaverona.it/images/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/minecraft-multiplayer-free_GM479516143.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/how-to-get-spins-for-free-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/coin-master-website_GM406889139.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/minecraft-116-free-download_GM479516143.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.guidaturisticaverona.it/images/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c0f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C0F 27432 bytes
SHA-256: 3227b48aeb70ecbb115734d40803fcb4ef7a1592f4aec393c4b111c021edeb12
font_01_sfnt_off000089a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A0 19260 bytes
SHA-256: 86e86c6d1a3146e1f407edd8c9cf68c56566e4a3a2a05930f639aef478547eb3

Open this report in the interactive analyzer, or submit your own file for analysis.