Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2a3f852daa6fb05…

MALICIOUS

PDF

33.8 KB Created: 2021-06-25 22:34:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 43b2b605bff4f2779b5c443afd158020 SHA-1: 12e2dfd670497422853c5e208887c466f6c81dbf SHA-256: a2a3f852daa6fb05f40cf5b16918d06d98f6a43b8bf55fdc007aeb6f56597c71
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 0.9980

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 http://netcdn.co/app/431946152/roblox-clone-hack-game-hack PDF link annotation
    • http://lawnn.ru/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/free-codes-for-roblox-toys_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://lawnn.ru/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/free-roblox-hacks-2021-german_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/free-robux-com_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/synapse-level-7-exploit-crack-download-free-roblox_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/coin-master-date-and-time-hack_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lawnn.ru/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://lawnn.ru/images/free-20-robux_GM431946152.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
font_00_sfnt_off00002e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3C 22340 bytes
SHA-256: 5d15fc0c4882fcb1116c5f3a306b4ac10a2bb7c3e9ef7b5e37c292e741ceb2d1
font_01_sfnt_off00006014.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6014 18656 bytes
SHA-256: ecca8b32dad027501e27376dc52b3619c0fe714d026ab38ecea81f866ea167b7