Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0337bac69b64c94…

MALICIOUS

PDF

48.2 KB Created: 2021-06-10 18:51:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 457c10486511f9a69cf0573527d32025 SHA-1: 41825e024614f383aa605ee0806654e79a00f13e SHA-256: d0337bac69b64c94f0871bc99044e4359337f4787107fe41ab592b6bd1743c26
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 0.9796

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.tw/app/431946152/roblox-free-avatar-stuff-game-hack PDF link annotation
    • http://www.homesweethome.pl/images/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/collect-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-generator-free_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/hacks-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-gernerator_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://www.homesweethome.pl/images/free-robux-club_GM431946152.pdfIn PDF document text
    • http://www.homesweethome.pl/images/coin-master-game-hacks_GM406889139.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_004_off00005497.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5497 25372 bytes
SHA-256: 28d7c24957e70546561a5565c4f9c39974d37dd1d49ff16bbc0168ee461c02c5
font_01_sfnt_off00008ed0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED0 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000098bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98BB 18532 bytes
SHA-256: 6698e22211301818dbbfe5339c4bd0e84396fd6d065ba3d74cdfe30c4d97a5ef